George Washington Tryon Jr. (20 May 1838 – 5 February 1888) was an American

malacologist Malacology is the branch of invertebrate zoology that deals with the study of the Mollusca (mollusks or molluscs), the second-largest phylum of animals in terms of described species after the arthropods. Mollusks include snails and slugs, clams, ...

who worked at the

Academy of Natural Sciences The Academy of Natural Sciences of Drexel University, formerly the Academy of Natural Sciences of Philadelphia, is the oldest natural science research institution and museum in the Americas. It was founded in 1812, by many of the leading natura ...

Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...

Biography

George Washington Tryon was the son of Edward K. Tryon and Adeline Savidt. In 1853 he attended the

Friends Central School Friends' Central School (FCS) is a Religious Society of Friends, Quaker school which educates students from nursery through grade 12. It is located in Wynnewood, Pennsylvania, Wynnewood, a community in Lower Merion Township, Pennsylvania in Grea ...

in Philadelphia. In 1859, Tryon became a member of the

of Philadelphia. He was largely responsible for the construction of new buildings for the Academy, especially, in 1866, a section for malacology. In 1869 he became the conservator in this malacological section. In 1865, together with a group of American malacologists, he founded (and financed) the American Journal of Conchology. This ended in 1872. In 1879 he started the ''Manual of Conchology; structural and systematic; with illustrations of the species'', volume 1, series 1. When he died, nine volumes of the first series had been published. From 1887 until 1888, his assistant was

Henry Augustus Pilsbry Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a centu ...

. Thereafter, Pilsbry continued as editor of the ongoing multi-volume ''Manual of Conchology''. The work was continued until 1935 when 45 volumes had been published. Tryon named more than 5,600 new species, and can be considered one of the most prolific malacologists. His important collection (more than 10,000 specimens) made the Academy of Natural Sciences of Philadelphia the center of malacological studies in the 19th century. The

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

genus '' Tryonia'' is named in his honor.

Bibliography

Tryon published more than 1,000 articles and books. * Tryon G. W. (January 1) 1861
''List of American writers on recent conchology. With the titles of their memoirs and dates of publication''
New York, Ballière Brothers, 440 Broadway
(Another copy of this book.)
*Tryon, G.W. 1862 : ''Synopsis of the Recent species of Gastrochaenidae, a family of acephalous Mollusca''. Proc. Acad. Nat. Sc. Philadelphia. Vol. 13:465-94 *Tryon, G.W. 1862 : ''A sketch of the History of Conchology in the United States''. Am. Journ. Sc. Arts. 33 * Tryon G. W. 1863. ''Notes on American fresh water shells, with descriptions of two new species''. proceedings of the Academy of Natural Sciences of Philadelphia, 14(9): 451–452. * Tryon G. W. 1864
''The complete writings of Constantine Smaltz Rafinesque on recent & fossil conchology''
Edited by Wm. G. Binney and George W. Tryon Jr. – Correct spelling should be

Constantine Samuel Rafinesque Constantine Samuel Rafinesque-Schmaltz (; October 22, 1783September 18, 1840) was a French 19th-century polymath born near Constantinople in the Ottoman Empire and self-educated in France. He traveled as a young man in the United States, ultimat ...

. The book includes also all of Rafinesque's malacological plates. * Tryon G. W. 1865. ''Observations on the family Strepomatidae''. American Journal of Conchology, 1(2): 97–135. (Strepomatidae is a synonym for Pleurocerinae in family

Pleuroceridae Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell. Reprodu ...

.) * Tryon G. W. 1865
''Synonymy of the species of Strepomatidae (melanians) of the United States; with critical observations on their affinities, and descriptions of land, fresh water and marine Mollusca''
New York, Ballière Brothers, 520 Broadway, 100 pp., 2 plates. –
Another copy of this book
) (Strepomatidae is a synonym for Pleurocerinae in family

.) * Tryon G. W. 1866–1868. ''Monograph of the terrestrial Mollusca of the United States''. American Journal of Conchology. ** 1866
2(3)
218–277, plates 1–4. ** 1866. 2(4): 306–327, plates 5–6. ** 1867. 3(2): 155–181, plates 11–14. ** 1868. 3(4): 298–234, plates 14–17. * Tryon G. W. 1870
''A monograph of the fresh-water univalve mollusca of the United States. Turbidae, Physadae''
Philadelphia. (In continuation of Prof. S. S. Haldeman's work published under the above title.) * Tryon, G.W. 1872 : Catalogue and Synonymy of the Recent species of the family Lucinidae. Proc. Acad. Nat. Sc. Philadelphia. pages 82–96 * Tryon G. W. 1873
''American marine conchology: or, Descriptions of the shells of the Atlantic coast of the United States from Maine to Florida''
Philadelphia, published by the author. * Tryon G. W. 1882
''Structural and systematic conchology: an introduction to the study of the Mollusca. Volume I''
Philadelphia, published by the author. * Tryon G. W. 1882
''Structural and systematic conchology: an introduction to the study of the Mollusca. Volume II''
Philadelphia, published by the author. * Tryon G. W. 1884
''Structural and systematic conchology: an introduction to the study of the Mollusca. Volume III''
Philadelphia, published by the author.

Manual of Conchology

''Manual of Conchology, structural and systematic, with illustrations of the species''. The illustrations in this work were created by Dr. E. J. Nolan. Note: there are old synonyms in names of some volumes. * 1879 �
Volume 1

Cephalopoda A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, an ...

. * 1880 �
Volume 2

Muricinae Muricinae is a taxonomic subfamily of predatory sea snails, marine gastropod mollusks within the large family Muricidae, the murex snails and rock snails. The Muricinae represent approximately 780 valid names of fossil (378) and recent (400 ...

, Purpurinae. 289 pp., 70 plates. * 1880–1881 �
Volume 3

Tritoniidae Tritoniidae is a taxonomic family of nudibranchs in the suborder Cladobranchia, shell-less marine gastropod molluscs.MolluscaBase (2018)Tritoniidae Lamarck, 1809.Accessed on 2021-01-01 This family includes some of the largest known nudibranchs, ...

, Fusidae (=

Fasciolariidae The Fasciolariidae, common name the "tulip snails and spindle snails", are a family (biology), family of small to large sea snails, marine (ocean), marine gastropod mollusks in the superfamily Buccinoidea. The family Fasciolariidae probably appe ...

Buccinidae The Buccinidae are a very large and diverse taxonomic family of large sea snails, often known as whelks or true whelks.Bouchet, P.; Gofas, S. (2010). Buccinidae. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. A ...

. 310 pp., 87 plates. * 1882 �
Volume 4
Nassidae,

Turbinellidae Turbinellidae are a family of sea snails, marine gastropod mollusks in the clade Neogastropoda. Members of this family are predators. Distribution Species in this family are found worldwide, mostly in tropical shallow waters but some in deep wa ...

Volutidae ''Volutidae'', common name volutes, are a taxonomic family of predatory sea snails that range in size from 9 mm to over 500 mm. They are marine gastropod mollusks. Most of the species have no operculum. Distribution This family of sea snails ...

Mitridae Mitridae, known as mitre shells, are a taxonomic family of sea snails, widely distributed marine gastropod molluscs in the clade Mitroidea.MolluscaBase (2018). Mitridae Swainson, 1831. Accessed through: World Register of Marine Species at: ...

. * 1883 �
Volume 5

Marginellidae Marginellidae, or the margin shells, are a taxonomic family of small, often colorful, sea snails, marine gastropod molluscs in the clade Neogastropoda. Taxonomy The higher classification of the family Marginellidae has long been in a state of ...

Olividae Olive snails, also known as olive shells and olives, scientific name Olividae, are a taxonomic family of medium to large predatory sea snails with smooth, shiny, elongated oval-shaped shells.Bouchet, P.; Gofas, S. (2012). Olividae. Accessed thr ...

Columbellidae The Columbellidae, the dove snails or dove shells, are a family of minute to small sea snails, marine gastropod mollusks in the order Neogastropoda.Bouchet, P.; Gofas, S. (2010). Columbellidae. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) Wo ...

. * 1884 �
Volume 6

Conidae Conidae, with the current common name of "cone snails", is a taxonomic family (previously subfamily) of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea. The 2014 classification of the superfamily Conoidea, groups onl ...

Pleurotomidae Turridae is a taxonomic family name for a number of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. MolluscaBase (2018). Turridae H. Adams & A. Adams, 1853 (1838). Accessed through: World Register of Marine Specie ...

. * 1885 �
Volume 7

Terebridae The Terebridae, commonly referred to as auger shells or auger snails, is a group or family of small to large predatory marine gastropods in the superfamily Conoidea.Gofas, S. (2012). Terebridae. World Register of Marine Specie2012-10-12 These ...

, Cancellariidae,

Strombidae Strombidae, commonly known as the true conchs, is a taxonomic family of medium-sized to very large sea snails in the superfamily Stromboidea, and the Epifamily Neostromboidae. The term true conchs, being a common name, does not have an exact me ...

Cypraeidae Cypraeidae, commonly named the cowries ( cowry), is a taxonomic family of small to large sea snails. These are marine gastropod mollusks in the superfamily Cypraeoidea, the cowries and cowry allies. Shell description Cypraeidae have adult s ...

Ovulidae Ovulidae, common names the ovulids, cowry allies or false cowries, is a family of small to large predatory or parasitic sea snails, marine gastropod molluscs in the superfamily Cypraeoidea, the cowries and the cowry allies. MolluscaBase eds. ...

, Cassididae, Doliidae. * 1886 �
Volume 8

Naticidae Naticidae, common name moon snails or necklace shells, is a family of medium to large-sized predatory sea snails, marine gastropod molluscs in the clade Littorinimorpha. The shells of the species in this family are mostly globular in shape. Nat ...

, Calyptraeidae,

Turritellidae Turritellidae, common name the "tower shells" or "tower snails", is a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Sorbeoconcha. These snails are filter feeders. This method of feeding is s ...

Vermetidae The Vermetidae, the worm snails or worm shells, are a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Littorinimorpha. The shells of species in the family Vermetidae are extremely irregular, and do ...

Caecidae Caecidae is a taxonomic family of very small and minute sea snails or micromolluscs, marine gastropod molluscs in the order Littorinimorpha.Bouchet, P.; Gofas, S. (2013). Caecidae. Accessed through: World Register of Marine Species at http ...

Eulimidae Eulimidae is a family of very small parasitic sea snails, marine gastropod mollusks in the superfamily Vanikoroidea. Description These small parasitic snails live on (or in some cases in) the bodies of echinoderms such as sea cucumbers ...

, Turbonillidae,

Pyramidellidae Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromol ...

. 461 pp., 79 plates. * 1887 �
Volume 9
Solariidae (by William B. Marshall), Ianthinidae, Trichotropidae, Scalariidae,

Cerithiidae Cerithiidae, common name the cerithiids or ceriths, is a large family of medium-sized marine gastropods in the clade Sorbeoconcha. Distribution Ceriths are found worldwide on sandy bottoms, reef flats or coral reef rock covered with sand ...

Rissoidae Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the superfamily Rissooidea and the order Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting pr ...

Littorinidae The Littorinidae are a Taxonomy (biology), taxonomic family (biology), family of over 200 species of sea snails, marine (ocean), marine gastropod molluscs in the clade Littorinimorpha, commonly known as periwinkles and found worldwide. Names In ...

. 488 pp., 71 plates. Note: Solariidae is not a valid family today. (a partial synonym for

Architectonicidae Architectonicidae, common name the staircase shells or sundials, are a family (biology), family of sea snails, marine (ocean), marine gastropod mollusks in the informal group "Lower Heterobranchia" (= Allogastropoda) of the clade Heterobranchia. ...

?) Published in parts: ** 7 February 1887 – part 33, pages 1–64. ** 8 June 1887 – part 34, pages 65–128. ** 2 September 1887 – part 35, pages 129–224. ** 10 December 1887 – part 36, 36a, pages 225–488. * 1888–1889 �
Volume 10

Neritidae Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. MolluscaBase eds. (2021). MolluscaBase. Neritininae Poey, 1852. Accessed through: ...

, Adeorbidae, Cyclostrematidae,

Liotiidae Liotiidae is a family of small sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Gofas, S. (2013). Liotiidae Gray, 1850. Accessed through: World Register of ...

Phasianellidae Phasianellidae common name the "pheasant shells" or "pheasant snails" is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the subclass Vetigastropoda Vetigastropoda is a major Taxonomy (biology), taxonomi ...

Turbinidae Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespecie ...

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resemb ...

, Stomatiidae,

Haliotidae ''Haliotis'', common name abalone, is the only genus in the family Haliotidae. This genus once contained six subgenera. These subgenera have become alternate representations of ''Haliotis''. The genus consists of small to very large, edible, ...

, Pleurotomariidae. 322 pp., 69 plates. Published in parts: ** 16 March 1888 – part 37, pages 1–64. ** 1 July 1888 – part 38, pages 65–144. ** 1 October 1888 – part 39, pages 145–208. ** 3 January 1889 – part 40, pages 209–323. * 1889 �
Volume 11

, Stomatiidae, Pleurotomariidae,

. 519 pp., 67 plates. Note: Stomatiidae is a synonym for subfamily Stomatellinae in the family Trochidae. * 1890 �
Volume 12
continued by

. Stomatellidae,

Scissurellidae Scissurellidae, sometimes known by the common name little slit snails, are a taxonomic family of minute sea snails, marine gastropod molluscs or micromolluscs in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & ...

, Pleurotomariidae,

, Scutellinidae, Addisoniidae,

Cocculinidae Cocculinidae is a family (biology), family of sea snails, deep-sea limpets, marine (ocean), marine gastropod mollusks in the superfamiuly Cocculinoidea. MolluscaBase eds. (2020). MolluscaBase. Cocculinidae Dall, 1882. Accessed through: World Regi ...

Fissurellidae Fissurellidae, common name the keyhole limpets and slit limpets, is a taxonomic family of limpet-like sea snails, marine gastropod molluscs in the clade Vetigastropoda.Rosenberg, G. (2012). Fissurellidae. Accessed through: World Register of Mari ...

. * 1891 �
Volume 13
continued by H. A. Pilsbry.

Acmaeidae Acmaeidae is a family of sea snails, specifically true limpets, marine gastropod mollusks in the superfamily Lottioidea and the subclass Patellogastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Bouchet, P. ...

Lepetidae Lepetidae is a family of sea snails or small, deep-water true limpets, marine gastropod molluscs in the clade Patellogastropoda the true limpets. Taxonomy This family consists of the two following subfamilies (according to the taxonomy of t ...

Patellidae Patellidae is a taxonomic family of sea snails or true limpets, marine gastropod molluscs in the clade Patellogastropoda. (The superfamily Patelloidea should not be confused with the similar-sounding genus of true limpets ''Patelloida'' which ...

Titiscaniidae ''Titiscania'' is a genus of slug-like sea snails, shell-less marine gastropod mollusks in the superfamily Neritopsoidea.Bouchet, P. (2015). Titiscania. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www ...

. * 1892 �
Volume 14
continued by H. A. Pilsbry. Polyplacophora, ( Chitons.) Lepidopleuridae,

Ischnochitonidae Ischnochitonidae is a family of polyplacophoran mollusc belonging to the superfamily Chitonoidea. MolluscaBase eds. (2022). MolluscaBase. Ischnochitonidae Dall, 1889. Accessed through: World Register of Marine Species at: https://www.marinesp ...

Chitonidae Chitonidae is a family of chitons or polyplacophorans, marine mollusks whose shell is composed of eight articulating plates or valves. There are fifteen extant genera in three subfamilies. Subfamilies and genera Subfamilies and genera within th ...

Mopaliidae Mopaliidae is a family of marine molluscs in the class Polyplacophora. Genera There are 10 recognized genera: * '' Amicula'' Gray, 1847 * '' Dendrochiton'' Berry, 1911 * '' Gallardochiton'' Sirenko, 2007 * ''Katharina'' Gray, 1847 * ''Mopalia'' ...

. * 1893 �
Volume 15
continued by H. A. Pilsbry. Polyplacophora, ( Chitons.) Acanthochitidae, Cryptoplacidae and appendix. Tectibranchiata. * 1895–1896 �
Volume 16
continued by H. A. Pilsbry.

Philinidae Philinidae is a family of medium-sized sea slugs, marine opisthobranch gastropod mollusks. These are headshield slugs, in the order Cephalaspidea.Bouchet, P. (2012). Philinidae. Accessed through: World Register of Marine Species at http://www. ...

, Gastropteridae,

Aglajidae Aglajidae is a family of often colorful, medium-sized, sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea.Bouchet, P. (2012). Aglajidae. Accessed through: ...

Aplysiidae Aplysiidae is the only family in the superfamily Aplysioidea, within the clade Anaspidea. These animals are commonly called sea hares because, unlike most sea slugs, they are often quite large, and when they are underwater, their rounded body sh ...

, Oxynoeidae, Runcinidae,

Umbraculidae Umbraculidae are a taxonomic family of unusual sea snails or limpets, marine opisthobranch gastropod molluscs in the clade Umbraculida. Distribution This family has a global distribution in tropical and subtropical seas. Genera Genera ...

Pleurobranchidae The Pleurobranchidae are a taxonomic family of sea slugs, marine gastropod molluscs in the clade Pleurobranchomorpha. Characteristics Species in the family Pleurobranchidae have a prominent mantle and an internal shell that becomes re ...

. * 1897–1898 �
Volume 17
continued by H. A. Pilsbry. Scaphopoda (by H. A. Pilsbry and Dr. Benjamin Sharp),

Aplacophora Aplacophora is a presumably paraphyletic taxon. This is a class of small, deep-water, exclusively benthic, marine molluscs found in all oceans of the world. MolluscaBase eds. (2021). MolluscaBase. Aplacophora. Accessed through: World Register of ...

. Index to genera and subgenera, volumes II. to XVII.

Manual of Conchology. Second series: Pulmonata

''Manual of Conchology, structural and systematic, with illustrations of the species. Second series:

Pulmonata Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

''. Altogether there are 28 volumes: * 1885 �
Volume 1
Testacellidae,

Oleacinidae Oleacinidae is a Taxonomy (biology), taxonomic family (biology), family of air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the clade Eupulmonata (according to the Taxonomy of the Gastropoda (Bouchet & ...

, Streptaxidae,

Helicoidea Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora. Taxonomy 2005 taxonomy There are 19 families within the superfamily Helicoidea according to the ta ...

Vitrinidae Vitrinidae is a family of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Limacoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). MolluscaBase eds. (2021). MolluscaBa ...

Limacidae Limacidae, also known by their common name the keelback slugs, are a taxonomic family of medium-sized to very large, air-breathing land slugs, terrestrial pulmonate gastropod molluscs in the superfamily Limacoidea. Distribution The distr ...

, Arionidae. 364 pp., 60 plates. * 1886 �
Volume 2

Zonitidae Zonitidae, common name the true glass snails, are a family of mostly rather small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Zonitoidea. Zonitidae is the only family in the superfamily Zonitoidea ...

. * 1887 �
Volume 3

Helicidae Helicidae is a large, diverse family (biology), family of small to large, air-breathing land snails, sometimes called the "typical snails." A number of species in this family are valued as food items, including ''Cornu aspersum'' (formerly ''Heli ...

– Volume I. * 1888 �
Volume 4
Helicidae – Volume II. Volumes after 1888 has Tryon as an author, they were edited by

: * 1889 �
Volume 5
Helicidae – Volume III. – Continued by

. * 1890 �
Volume 6
Helicidae – Volume IV. Continued by H. A. Pilsbry. * 1891 �
Volume 7
Helicidae – Volume V. Continued by H. A. Pilsbry. * 1892 �
Volume 8
Helicidae – Volume VI. Continued by H. A. Pilsbry. * 1894 �
Volume 9
Helicidae – Volume VII. Continued by H. A. Pilsbry. * 1895 �
Index to the helices
Continued by H. A. Pilsbry. * 1895–1896 �
Volume 10
American Bulimi and Bulimuli. '' Strophocheilus'', ''

Plekocheilus ''Plekocheilus'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amphibulimidae. MolluscaBase eds. (2021). MolluscaBase. Plekocheilus Guilding, 1827. Accessed through: World Register of Marine Speci ...

'', '' Auris'', '' Bulimulus''. Continued by H. A. Pilsbry. * 1897–1898 �
Volume 11
American

Bulimulidae Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.MolluscaBase eds. (2020). MolluscaBase. Bulimulidae Tr ...

: '' Bulimulus'', '' Neopetraeus'', '' Oxychona'', and South American ''

Drymaeus ''Drymaeus'' is a large genus of medium-sized air-breathing, tropical land snails, terrestrial pulmonate gastropod molluscs in the subfamily Peltellinae of the family Bulimulidae.MolluscaBase eds. (2020). MolluscaBase. Drymaeus Albers, 1850. ...

''. Continued by H. A. Pilsbry. * 1899 �
Volume 12
American

: North American and Antillean ''

'', '' Leiostracus'', Orthalicinae and

Amphibuliminae Orthalicidae (orthalicid land snails) are a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks are classified in the subfamily Orthalicoidea of the order Stylommatophora. MolluscaBase eds. (2021). MolluscaBas ...

. Continued by H. A. Pilsbry. * 1900 �
Volume 13
Australasian

: '' Bothriembryon'', ''

Placostylus ''Placostylus'', or flax snails, are a genus of very large, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Bothriembryontidae.MolluscaBase eds. (2020). MolluscaBase. Placostylus H. Beck, 1837. Accessed thro ...

''.

: ''

Amphidromus ''Amphidromus'' is a genus of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae. The shells of ''Amphidromus'' are relatively large, from to in maximum dimension, and particularly colorf ...

''. Continued by H. A. Pilsbry. * 1901–1902 �
Volume 14
Oriental Bulimoid

. Odontostominae. Cerionidae. Continued by H. A. Pilsbry. Note: Odontostomini is now a tribe in the subfamily

Bulimulinae Bulimulidae is a taxonomic family of medium-sized to large, air-breathing, tropical and sub-tropical land snails, terrestrial pulmonate gastropod molluscs in the superfamily Orthalicoidea.MolluscaBase eds. (2020). MolluscaBase. Bulimulidae Tr ...

. * 1903 �
Volume 15

Urocoptidae Urocoptidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Urocoptoidea. Taxonomy 2005 taxonomy The family Urocoptidae was classified in the superfamily Orthalicoidea (according to ...

. Continued by H. A. Pilsbry. * 1904 �
Volume 16
Urocoptidae,

Achatinidae Achatinidae (New Latin, from Greek "''agate''") is a family of medium to large sized tropical land snails, terrestrial pulmonate gastropod mollusks from Africa. Well known species include ''Achatina achatina'' the Giant African Snail, and ''Lis ...

. Continued by H. A. Pilsbry. * 1904–1905 �
Volume 17
African Achatinidae. Continued by H. A. Pilsbry. * 1906 �
Volume 18
Achatinidae: Stenogyrinae and Coeliaxinae. Continued by H. A. Pilsbry. * 1907–1908 �
Volume 19

, Ferussacidae. Continued by H. A. Pilsbry. (Correct spelling is

Ferussaciidae Ferussaciidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Achatinoidea. MolluscaBase eds. (2020). MolluscaBase. Ferussaciidae Bourguignat, 1883. Accessed through: World Register of Marine ...

these days.) * 1909–1910 �
Volume 20
'' Caecilioides'', '' Clessula'' and

Partulidae Partulidae is a family of air-breathing land snails, terrestrial gastropod mollusks in the superfamily Pupilloidea.MolluscaBase eds. (2021). MolluscaBase. Partulidae Pilsbry, 1900. Accessed through: World Register of Marine Species at: http:// ...

. Index to vols. XVI. – XX. Continued by H. A. Pilsbry. Other volumes are not attributed to George Washington Tryon: * 1911 �
Volume 21

Achatinellidae Achatinellidae is a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea. Taxonomy It was previously the only family in the superfamily Achatinelloidea (according to the taxonom ...

( Amastrinae).

Alpheus Hyatt Alpheus Hyatt (April 5, 1838 – January 15, 1902) was an American zoologist and palaeontologist. Biography Alpheus Hyatt II was born in Washington, D.C. to Alpheus Hyatt and Harriet Randolph (King) Hyatt. He briefly attended the Maryla ...

. ''

Leptachatina ''Leptachatina'' is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae Amastridae is a taxonomic family of small, air-breathing, land snails, terrestrial pulmonate gastropod mo ...

'' by C. Montague Cooke. Illustrated by Helen Winchester.Hyatt A. & Pilsbry H. A. 1911. Manual of conchology, structural and systematic, with illustrations of the species. Second series: Pulmonata. Preface. page IX. Volume 21. (The volume was published after Hyatt's death in 1902.) (

Amastridae Amastridae is a taxonomic family of small, air-breathing, land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea. MolluscaBase eds. (2021). MolluscaBase. Amastridae Pilsbry, 1910. Accessed through: World Register ...

is considered to be a sole family these days.) * 1912–1914 �
Volume 22
Achatinellidae by Henry A. Pilsbry assisted by C. Montague Cooke. Genealogy and migrations of the Achatinellidae by Alpheus Hyatt. * 1915–1916 �
Volume 23
Appendix to

. Tornatellinidae. Index, vols. XXI-XXIII. Henry A. Pilsbry & C. Montague Cooke. * 1916–1918 �
Volume 24

Pupillidae Pupillidae is a family of mostly minute, air-breathing, land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the superfamily Pupilloidea. MolluscaBase eds. (2021). MolluscaBase. Pupillidae W. Turton, 1831. Accessed through: ...

(

Gastrocoptinae Gastrocoptidae is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the superfamily Pupilloidea.Philippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, ...

). Henry A. Pilsbry. * 1918–1920 �
Volume 25
Pupillidae (Gastrocoptinae, Vertigininae). Henry A. Pilsbry & C. Montague Cooke. (

Vertiginidae Vertiginidae, common name the whorl snails, is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the superfamily Pupilloidea. Distribution The distribution of the Vertiginidae is in the ...

is considered to be a sole family these days.) * 1920–1921 �
Volume 26
Pupillidae (Vertigininae, Pupillinae). Henry A. Pilsbry. * 1922–1926 �
Volume 27
Pupillidae (Orculinae, Pagodulinae, Acanthinulinae, etc.). Henry A. Pilsbry. * 1927–1935 �
Volume 28
Geographic Distribution of Pupillidae;

Strobilopsidae Strobilopsidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea. Taxonomy The family Strobilopsidae is classified within the informal group Orthurethra, itself belonging to the ...

Valloniidae Valloniidae is a taxonomic family of small and minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea. MolluscaBase eds. (2020). MolluscaBase. Valloniidae Morse, 1864. Accessed through: Worl ...

and

Pleurodiscidae Pleurodiscus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea. ''Pleurodiscus'' is the only genus in the family Pleurodiscidae. Species Species within the genus ''Pleurodiscus'' ...

. Henry A. Pilsbry.

References

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