Anarithma stepheni

Anarithma stepheni is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.^[1]

Anarithma stepheni
Shell of Anarithma stepheni (specimen at MNHN, Paris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Mitromorphidae
Genus:	Anarithma
Species:	A. stepheni
Binomial name
Anarithma stepheni (Melvill & Standen, 1897)
Synonyms[1]
Anarithma pacei (Melvill, J.C. & R. Standen, 1897) (renamed) Columbella (Seminella) stepheni (Melvill & Standen, 1897) Columbella dibolos Barnard, 1964 Columbella (Seminella) pacei Melvill & Standen, 1896 (original combination) Columbella stepheni (Melvill & Standen, 1897) Lovellona stepheni (J.C. Melvill & R. Standen, 1897) Mitrolumna stepheni (Melvill & Standen, 1897) Mitromorpha (Lovellona) stepheni (Melvill & Standen, 1897) Mitromorpha stepheni (Melvill & Standen, 1897) Seminella pacei (Melvill, J.C. & R. Standen, 1896) (preoccupied)

Description

The length of the shell attains 4 mm, its diameter 1.75 mm.

(Original description) The minute, white shell is particularly beautiful. It contains six whorls , compact, clathrate, with close longitudinal riblets and revolving lirae. Just underneath the sutures the ante-penultimate and penultimate whorls are sparsely spotted with fulvous. In the body whorl the spots again occur towards the middle, but are contiguous to, and below joined with, one large dorsal effusion of the same colour. The aperture is narrow. The simple outer lip is thickened..The columella is upright.^[2]

Distribution

This marine species occurs off the Philippines; French Polynesia, Vanuatu and Papua New Guinea.