Lyncina ventriculus

The shells of these uncommon cowries reach on average 45–50 millimetres (1.8–2.0 in) of length, with a minimum size of 32 millimetres (1.3 in) and a maximum size of 75 millimetres (3.0 in). The shape of these smooth and shiny shells is usually oval, the dorsum surface is generally reddish brown, with four dark brown transversal bands, while the sides are definitely chocolate brown and present several vertical thin lines. The base may be white, pale pink or pale brown, the aperture is long and narrow, with short teeth on both lips. The shell is quite similar to Lyncina schilderorum, Lyncina carneola and Lyncina sulcidentata. In the living cowries the mantle is dark-grey, with clearer sensorial papillae.

This species is distributed in the eastern Indian Ocean (Malaysia, Eastern Indonesia, Cocos Islands and Christmas Island), in the Central and Western Pacific Ocean (South China Sea, Taiwan, Philippines, Samar Island, Guam, Melanesia, Solomon Islands, Micronesia, New Caledonia, eastern Polynesia, Tahiti and Hawaii).