''Iotyrris cerithiformis'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Turridae 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 ...

, the turrids.

Description

The length of the shell attains 35 mm, its diameter 12 mm. (Original description by Pease) The fusiform, turreted shell is keeled all over. The keels are nearly of the same size, and almost equidistant. The keel on the middle of the

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...

s is slightly the largest. The intermediate superfices are concave. The interstices between the keels are finely striate longitudinally. The sinus is deep. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is ...

is short. The color of the shell is white, the keels are spotted with reddish brown. The above species may be distinguished by the regularity of its keels. The spots are small, oblong, and confined to the edge of the keels.Pease W. H. (1869). ''Description of new species of marine Gasteropodæ inhabiting Polynesia.'' American Journal of Conchology. 5: 64–79
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Distribution

This marine species occurs off the

Hawaii Islands The Hawaiian Islands ( haw, Nā Mokupuni o Hawai‘i) are an archipelago of eight major islands, several atolls, and numerous smaller islets in the Pacific Ocean, North Pacific Ocean, extending some from the Hawaii (island), island of Hawaii ...

at a depth of 11 m to 15 m.

References

* Olivera, B.M., 2002. ''The gastropod genus Xenuroturris (Iredale, 1929) evaluated and a new turrid Lophiotoma olangoensis described from the Central Philippines''. Science Diliman 14(2):39-49

External links

* {{DEFAULTSORT:Iotyrris Cerithiformis cerithiformis Gastropods described in 1869