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Helicina Guppyi
''Helicina guppyi'' is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae. Shell description The species is smaller and lower- spired than the other Dominican ''Helicina'' species, and always has a dull brown colour, a paler aperture and a hairy periostracum; ‘covered with a velvety epidermis’, weakly keeled, with a columellar denticle. Its size is 5-8.5 mm. Distribution This species lives in Guadeloupe, Dominica and in Martinique. This is the most common of the helicinids in Dominica, but generally restricted to the leeward side of the island. Taxonomy Robert John Lechmere Guppy (1868) Guppy R. J. L. (1868). "On the terrestrial mollusks of Dominica and Grenada, with an account of some new species from Trinidad". '' Annals and Magazine of Natural History'' (4)1429442. described two taxa from Dominica based on shell variation within this species; both names were preoccupied. William Harper Pease (1871 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spire (mollusc)
A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods. In textbook illustrations of gastropod shells, the tradition (with a few exceptions) is to show most shells with the spire uppermost on the page. The spire, when it is not damaged or eroded, includes the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcadia
''Alcadia'' is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the family Helicinidae. Species Species within the genus ''Alcadia'' include: * ''Alcadia affinis'' C.B. Adams, 1846 * '' Alcadia bermudezi'' Aguayo & Jaume, 1957"Mollusca" . Diversidad Biológica Cubana, accessed 23 March 2011. * '''' Aguayo & Jaume, 1957 * '' Alcadia concinna'' (Gundlach in Pfeiffer, 1857) * '' |
Horace Burrington Baker
Horace Burrington Baker (1889–1971) was an American malacologist.Coan E. V. & Kabat A. R. (January 27, 2017)2,400 years of malacology, 14th ed. 1443 pp. American Malacological Society. He was born in Sioux City, Iowa, and after serving as a lieutenant in the U.S. Army in 1917–18, was awarded a PhD in 1920 by the University of Michigan. He became a zoologist specializing in malacology. He was an instructor at the University of Pennsylvania in 1920, an assistant professor in 1926, an associate professor in 1928 and professor from 1939 to 1959. He was also business manager (1932–56) and editor (1957–70) of the ''Nautilus'', the journal of malacology. His spouse was Bernadine C. Baker (1906). A species of snake, ''Leptodeira ''Leptodeira'' is a genus of colubrid snakes commonly referred to as cat-eyed snakes. The genus consists of 17 species that are native to primarily Mexico and Central America, but range as far north as the Rio Grande Valley region of Texas in Uni ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preoccupied Name
In biology, a homonym is a name for a taxon that is identical in spelling to another such name, that belongs to a different taxon. The rule in the International Code of Zoological Nomenclature is that the first such name to be published is the senior homonym and is to be used (it is " valid"); any others are junior homonyms and must be replaced with new names. It is, however, possible that if a senior homonym is archaic, and not in "prevailing usage," it may be declared a ''nomen oblitum'' and rendered unavailable, while the junior homonym is preserved as a ''nomen protectum''. :For example: :*Cuvier proposed the genus ''Echidna'' in 1797 for the spiny anteater. :*However, Forster had already published the name ''Echidna'' in 1777 for a genus of moray eels. :*Forster's use thus has priority, with Cuvier's being a junior homonym. :*Illiger published the replacement name ''Tachyglossus'' in 1811. Similarly, the International Code of Nomenclature for algae, fungi, and plants (IC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annals And Magazine Of Natural History
The ''Journal of Natural History'' is a scientific journal published by Taylor & Francis focusing on entomology and zoology. The journal was established in 1841 under the name ''Annals and Magazine of Natural History'' (''Ann. Mag. Nat. Hist.'') and obtained its current title in 1967. The journal was formed by the merger of the ''Magazine of Natural History'' (1828–1840) and the ''Annals of Natural History'' (1838–1840; previously the ''Magazine of Zoology and Botany'', 1836–1838) and '' Loudon and Charlesworth's Magazine of Natural History''. In September 1855, the ''Annals and Magazine of Natural History'' published "On the Law which has Regulated the Introduction of New Species", a paper which Alfred Russel Wallace had written while working in the state of Sarawak on the island of Borneo in February of that year. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert John Lechmere Guppy
Robert John Lechmere Guppy (15 August 1836 in London – 5 August 1916 in San Fernando, Trinidad and Tobago) was a British-born naturalist after whom the guppy is named. He contributed much to the geology, palaeontology and zoology of the West Indian region, in particular Trinidad. He was one of four children of Robert Guppy (1808-1894), a lawyer who went to Trinidad and became Mayor of San Fernando, and Amelia Elizabeth Guppy, a painter and one of the pioneers of photography, who navigated the Orinoco River accompanied by only a few native Indians. "Lechmere", as he was called, was raised by his grandparents, Richard Parkinson and Lucy (née Lechmere, daughter of Royal Navy officer William Lechmere, Vice-Admiral of the White), in Kinnersley Castle, a 13th-century Norman castle in Herefordshire. Richard Parkinson wanted Lechmere to take over the castle, a role in which he had no interest. Having come into an inheritance from another relative, he left England at the age of 18. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leeward
Windward () and leeward () are terms used to describe the direction of the wind. Windward is ''upwind'' from the point of reference, i.e. towards the direction from which the wind is coming; leeward is ''downwind'' from the point of reference, i.e. along the direction towards which the wind is going. The side of a ship that is towards the leeward is its "lee side". If the vessel is heeling under the pressure of crosswind, the lee side will be the "lower side". During the Age of Sail, the term ''weather'' was used as a synonym for ''windward'' in some contexts, as in the ''weather gage''. Because it captures rain, the windward side of a mountain tends to be wet compared to the leeward it blocks. Origin The term "lee" comes from the middle-low German word // meaning "where the sea is not exposed to the wind" or "mild". The terms Luv and Lee (engl. Windward and Leeward) have been in use since the 17th century. Usage Windward and leeward directions (and the points ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martinique
Martinique ( , ; gcf, label=Martinican Creole, Matinik or ; Kalinago: or ) is an island and an overseas department/region and single territorial collectivity of France. An integral part of the French Republic, Martinique is located in the Lesser Antilles of the West Indies in the eastern Caribbean Sea. It has a land area of and a population of 364,508 inhabitants as of January 2019.Populations légales 2019: 972 Martinique INSEE One of the , it is directly north of Saint Lucia, northwest of |
Guadeloupe
Guadeloupe (; ; gcf, label=Antillean Creole, Gwadloup, ) is an archipelago and overseas department and region of France in the Caribbean. It consists of six inhabited islands—Basse-Terre, Grande-Terre, Marie-Galante, La Désirade, and the two inhabited Îles des Saintes—as well as many uninhabited islands and outcroppings. It is south of Antigua and Barbuda and Montserrat, north of the Commonwealth of Dominica. The region's capital city is Basse-Terre, located on the southern west coast of Basse-Terre Island; however, the most populous city is Les Abymes and the main centre of business is neighbouring Pointe-à-Pitre, both located on Grande-Terre Island. It had a population of 384,239 in 2019.Populations légales 2019: 971 Guadeloupe INSEE Like the other overseas departments, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columella (gastropod)
The columella (meaning "little column") or (in older texts) pillar is a central anatomical feature of a coiled snail shell, a gastropod shell. The columella is often only clearly visible as a structure when the shell is broken, sliced in half vertically, or viewed as an X-ray image. The columella runs from the apex of the shell to the midpoint of the undersurface of the shell, or the tip of the siphonal canal in those shells which have a siphonal canal. If a snail shell is visualized as a cone of shelly material which is wrapped around a central axis, then the columella more or less coincides spatially with the central axis of the shell. In the case of shells that have an umbilicus, the columella is a hollow structure. The columella of some groups of gastropod shells can have a number of plications or folds (the columellar fold, plaits or plicae), which are usually visible when looking to the inner lip into the aperture of the shell. These folds can be wide or narrow, prominent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
