- Source: Neocollonia ponsonbyi
Neocollonia ponsonbyi is a species of sea snail, a marine gastropod mollusk in the family Colloniidae.
Description
The shell grows to a length of 8 mm, its diameter also 8 mm.
(Original description in Latin) The subglobose shell is thick and deeply umbilicate. It is gray, spotted with brown and is densely spirally ridged. The ridges are rounded, articulated with small brown spots, with a smaller ridge intervening. The spire is briefly conical. The shell contains 4 convex whorls. The suture is canaliculated. The body whorl is rounded. The base of the shell is convex, with a thick nodose rib in the umbilical region and is bordered by a deep and rather wide groove. The aperture is almost circular, its interior white. The peristome is thick. The operculum is flat on the inside, convex on the outside, deeply umbilicate, wrinkled, bordered by a somewhat narrow keel.
Distribution
This marine species occurs off Northeast Cape to Durban, South Africa
References
Kilburn, R.NB. (1874). "Taxonomic notes on South African marine Mollusca (3): Gastropoda: Prosobranchia, with descriptions of new taxa of Naticidae, Fasciolariidae, Magilidae, Volutomitridae and Turridae". Annals of the Natal Museum. 22: 187–220.
External links
"Bothropoma ponsonbyi". Gastropods.com. Retrieved 15 January 2019.