The Collaborative International Dictionary
Hyalea
Hyalea \Hy*a"le*a\, n. [NL., fr. Gr. ? glassy, fr. "y`alos glass.] (Zo["o]l.) A pteropod of the genus Cavolina. See Pteropoda, and Illustration in Appendix.
Wiktionary
hyalea
n. A mollusk of the genus (taxlink Cavolinia genus noshow=1).