Cryptodaphne gradata

Cryptodaphne gradata
	Original image of a shell of Cryptodaphne gradata
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Raphitomidae
Genus:	Cryptodaphne
Species:	C. gradata
Binomial name
	Cryptodaphne gradata; (Schepman, 1913)
Synonyms[1]
	Pleurotomella gradata Schepman, 1913

Cryptodaphne gradata is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.[1]

Description

The length of the shell attains 10½ mm, its diameter 4¼ mm.

(Original description) The white, fusiform shell is gradate and moderately strong. It contains 8 whorls (the uppermost broken), of which 2 form a reddish-brown protoconch, with convex whorls (their number probably will have been 4 of which 2 are wanting). The whorls are sculptured by curved riblets, crossed by oblique finer ones in the lower part, which is consequendy finely reticulated. The subsequent whorls are convex, angular, gradate by a conspicuous excavation of the upper part, the lower part perpendicular. The spirals consist of a keel and a few, rather strong, slightly flattened lirae on the lower part, 4 in number on penultimate whorl and 2 narrow ones at the base of excavation, just above the keel The body whorl shows numerous stronger, flat lirae, eventually divided by a very fine groove, and some intermediate ones. The axial sculpture consists of numerous fine growth striae and curved riblets in the upper part of the excavation, less pronounced on the body whorl, not quite extending to the keel. The body whorl is convex, regularly attenuated towards the rather long siphonal canal. The aperture is elongate, angular above, ending in a long, gutterlike siphonal canal below. The peristome is broken, probably with a moderately wide, shallow sinus. The columellar margin is concave, with a rather strong layer of enamel along the siphonal canal. [2]

Distribution

This species occurs in the Halmahera Sea, East Indonesia

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References

Cryptodaphne gradata (Schepman, 1913). Retrieved through: World Register of Marine Species on 5 April 2010.
Schepman, 1913. The prosobranchia of the Siboga expedition. Part IV -V - VI: Toxoglossa This article incorporates text from this source, which is in the public domain.

External links

Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
Gastropods.com: Cryptodaphne gradata
Sysoev, A.V. (1996b) Deep-sea conoidean gastropods collected by the John Murray Expedition, 1933–34. Bulletin of the Natural History Museum of London, Zoology, 62, 1–30. page(s): 22

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[WoRMS-1] Cryptodaphne gradata (Schepman, 1913). Retrieved through: World Register of Marine Species on 5 April 2010.

[2] Schepman, 1913. The prosobranchia of the Siboga expedition. Part IV -V - VI: Toxoglossa This article incorporates text from this source, which is in the public domain.