concheus
conchĕus, a, um, adj. [concha],
- of or pertaining to a shell-fish: baca, a pearl, Verg. Cul. 67 dub. (prob. a gloss; v. Sillig N. cr.).
concheus, a, um (concha), zur Muschel gehörig, baca, Perle, Ps. Verg. cul. 68 R.
conchĕus, a, um (concha), de coquille : conchea baca Virg. Cul. 67, perle.