Rissoa
noun
Ris·soa
ˈrisəwə,
rə̇ˈsōə
: a genus (the type of the family Rissoidae) of small snails that live in brackish water and have an acuminate often finely sculptured shell with a corneous operculum
Word History
Etymology
New Latin, after Giovanni A. Risso †1845 French naturalist