Conchidium = Similar to a bivalved mollusc; κογχίδιον.
Conchonia = Bivalved shell like a mussel; κόγχη, ὄνια.
Conchopsis = Similar to a bivalved shell-fish or mussel; κόγχη, ὄψις.
Conchoceras = Mussel with horns; κόγχη, κέρας.
Cœlodoras = Hollow spear; κοίλος, δόρας.