Catalog Number: USNM 859143
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Collector(s): M. Blocher
Year Collected: 1986
Locality: Fringes Of Grand Recif Towards Open Sea Of Tulear, Madagascar, Indian Ocean
- Paratype: Da Motta & Blocher. 1982. Publ. Ocas. Soc. Port. Malac. 1: 16-17.
Habitat and Ecology
IUCN Red List Assessment
Red List Category
Red List Criteria
The size of an adult shell varies between 65 mm and 163 mm. The shell is rather narrow and has an elevated spire. The color of the shell is chocolate-brown, covered by elevated close revolving lines of darker color. The surface is irregularly overlaid by subtriangular white spots, some of which are very large. The operculum is a very minute square on the dorsal surface of the hinder part of the foot.