Bivalvia | Venerida | Cyrenoidea | Cyrenoididae | Polymesoda mexicana

nominal species Cyrena varians Carpenter, 1857

Cyrena varians Carpenter, 1857 = Polymesoda mexicana

Carpenter, 1857. Maz. Shells: 115. [nomen nudum]

Taxonomic Opinions

+ Cyrena triangula v. d. Busch — Clessin, 1877: 112.

+ Cyrena mexicana Sow. — Clessin, 1877: 119.

+ Cyrena mexicana Sowerby — Prime, 1870: 145.

+ Cyrena mexicana Sowerby — Prime, 1865: 22, 15.