species Polymesoda mexicana (Broderip & Sowerby, 1829): synonymy

Cyrena mexicana Broderip & Sowerby, 1829

Broderip & Sowerby, 1829. Zool. Jour. 4: 364.

Polymesoda (Egeta) mexicana — Martens (1900)
Polymesoda mexicana — H.B. Baker (1930), WoRMS (2012), OBIS (2012), Czaja et al. (2023)
Polymesoda (s.s.) mexicana — Olsson (1961), Keen (1971)

Cyrena altilis Gould, 1852

Gould, 1852. Boston Journ. of Nat. Hist. 6: 400, pl. 16, fig. 5 bis.

Neocyrena triangula — Olsson (1961)
Polymesoda (Egeta) altilis — Keen (1971)
Polymesoda altilis — WoRMS (2012)

Cyrena (Anomala) nitidula Deshayes, 1855

Deshayes, 1855. Proc. Zool. Soc. London 22: 21, sp. 34.

Polymesoda (s.s.) mexicana — Keen (1971)
Cyanocyclas nitidula — Simone (2006)

Cyrena olivacea Carpenter, 1857

(homonym of Cyrena africana var. olivacea Krauss, 1848)
Carpenter, 1857. Maz. Shells: 114.

Polymesoda (s.s.) olivacea — Martens (1900)
Neocyrena triangula — Olsson (1961)
Polymesoda (Egeta) altilis — Keen (1971)
Polymesoda olivacea — Contreras-Arquieta (2000)
Geloina olivacea — OBIS (2012)

Cyrena varians Carpenter, 1857

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

Cyrena inaequilateralis Deshayes of Authors

Deshayes of Authors.

Cyrena fontainei Philippi, 1851

(misidentified reference to Cyrena fontainei d’Orbigny, 1846)
Philippi, 1851. Zeitschr. f. Malakozool.: 70.

Polymesoda (s.s.) olivacea — Martens (1900)
Polymesoda (Egeta) altilis — Keen (1971)

Cyrena fragilis Sowerby, 1878

Deshayes, Mus. Cuming Sowerby, 1878. Conch. Icon. 20: ??.

Polymesoda (s.s.) mexicana — Keen (1971)