Rissoina punctostriata is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.
Description The shell is small, white, elongate-conical, and relatively thin, measuring approximately 5-10mm in length and 2.5-3.5 mm in width. The protoconch consists of three spiral smooth whorls, with the final whorl having a diameter of about 400 μm, indicating a plankotrophic type larval development. A spiral cord appears in the middle of the last quarter of the final whorl.
The teleoconch consists of 6-7 whorls. The first 3-4 spire whorls are distinctively angulated, while subsequent whorls become gradually convex. The suture is shallow with a subsutural depression that gradually becomes more pronounced on later whorls, creating a slightly undulating profile. Distribution This species occurs in the Atlantic Ocean off Mauritania, Senegal, Angola, the Cape Verdes, São Tomé and Príncipe.
References
Talavera, F.G. (1975) Moluscos de sedimentos de la plataforma continental de Mauritania. Boletín del Instituto Español de Oceanografía, 192, 1-18, 4 pls. NIZT 682 Gofas S. (1999). The West African Rissoidae (Gastropoda: Rissooidea) and their similarities to some European species. The Nautilus 113(3): 78-101 Rolán E. & Luque Á.A. 2000. The subfamily Rissoininae (Mollusca: Gastropoda: Rissoidae) in the Cape Verde Archipelago (West África). Iberus 18(1): 21-94 Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda