Ithycythara septemcostata
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| Ithycythara septemcostata | |
|---|---|
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| Shell of Ithycythara septemcostata | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Superfamily: | Conoidea |
| Family: | Mangeliidae |
| Genus: | Ithycythara |
| Species: | I. septemcostata |
| Binomial name | |
| Ithycythara septemcostata (Schepman, 1913) | |
| Synonyms[1] | |
|
Mangilia septemcostata Schepman, 1913 | |
Ithycythara septemcostata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.[1]
The length of the shell attains 9 mm, its diameter 3.5 mm.
The strong, fusiform shell has a rather long siphonal canal. it is light yellowish-brown, with faint red-brown bands, interrupted by the ribs. There is one rather broad band, just below suture, the second below the periphery, a third near the base of the body whorl. The base of the siphonal canal is likewise tinted. The shell contains about 71⁄2 whorls, 21⁄2 form the convexly whorled protoconch, of which about the first whorl is smooth, the other ones are closely ribbed. The subsequent whorls are slightly convex, each with 7 continuous ribs, which have a small sharp point a little above the conspicuous, waved suture and are faintly crenulated, especially on lower part of the body whorl. The interstices are smooth, but for a faint spiral, connecting the costal points and a few spirals on the siphonal canal. The aperture is oblong, sharply angular above, with a rather long, narrow siphonal canal below. The peristome is not developed, probably with a shallow sinus above. The columellar margin is nearly straight, slightly directed to the left along the siphonal canal.[2]
