ANoponNTA COMPLANATA. — Anodonte comprimée

Concha variabilis, plerumque minor aut mediocris, ellipticoovata, elongata, subrhombea, compressa, fragiliuscula, hians, extus viridi-lutea aut viridi-brunnea, nitida, intus roseo-cœrulescens; margine superiore sæpius arcualo, inferiore subconcavo ; lamellis cardinalibus compressis ; impressionibus muscularibus vix conspicuis.

Sy. Anodonta complanata, Ziegl. in Mus. — Anodonta compressa, Mke Syn. Moll. ed. 2, p. 106 (1850). — Anodonta complanatu, Rossm. Icon. I. p. 112, t. 5, F. 68 (1835) ; IV. p. 24, t. 90, f. 283 (1836): — Anton Verz. p.15, n°582 (1839). — Anodon cygneus var. complanata, Gray, Turt. Man. ed. 2, p. 291 (1840).— 4. rhom-