Microdrillia circumvertens

Microdrillia circumvertens is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.^[1]

Microdrillia circumvertens
Original drawing of a shell of Microdrillia circumvertens
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Borsoniidae
Genus:	Microdrillia
Species:	M. circumvertens
Binomial name
Microdrillia circumvertens (Melvill & Standen, 1901)
Synonyms[1]
Drillia circumvertens Melvill & Standen, 1901 (original combination)

Description

The height of the small, milky-white shell attains 6 mm, its width 2.25 mm. It has an ovate-fusiform shape. It contains 8 whorls. The body whorl is bicarinate. A very beautiful spirally carinate and lirate species. The short canal and wide sinus proclaim it rightly placed in Microdrillia and the acute carinae are peculiar. The aperture is oblique and oblong. The columella contains no plications.^[2]

Distribution

This marine species occurs from the Gulf of Oman to Transkei, South Africa