What is "carinaria"

Carinaria \Car`i*na"ri*a\, n. [NL., fr. L. carina keel.] (Zo["o]l.) A genus of oceanic heteropod Mollusca, having a thin, glassy, bonnet-shaped shell, which covers only the nucleus and gills. [1913 Webster] ||

n. (context zoology English) Any of the genus (taxlink Carinaria genus) of oceanic heteropod molluscs.

Carinaria is a genus of medium-sized floating sea snails, pelagic gastropod molluscs in the family Carinariidae.