| Vexillum aemula | |
|---|---|
 | |
| Original image of a shell ofVexillum aemula | |
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Costellariidae |
| Genus: | Vexillum |
| Species: | V. aemula |
| Binomial name | |
| Vexillum aemula (E. A. Smith, 1879) | |
| Synonyms[1] | |
| |
Vexillum aemula is aspecies of smallsea snail, marinegastropodmollusk in thefamilyCostellariidae, the ribbed miters.[1]
The length of the shell attains 12 mm, its diameter 4 mm; the length of the aperture 5 mm.
(Original description) The fusiformly ovate, shell is blackish brown, with a narrow yellow line round the middle of thewhorls, and yellow at the upper margin, and a second line on thebody whorl rather below the middle. It is clothed with an olive epidermis obscuring the colouring. The shell consists of eight whorls, slightly convex, with stoutish longitudinal ribs, about fourteen in number on tha penultimate whorl, attenuated and obsolete just before the five oblique stoutish spiral cords encircling the tail.The sutures are smooth, about as broad as the ribs. Theaperture is small, dark brown, with two yellow transverse lines, lirate far within. Thecolumella is armed with four plaits and a slight callus at the upper extremity.[2]
This marine species occurs in theEast China Sea and offJapan.