Cyrenoida dupontia Joannis
Cyrenoida insula Morrison
Cyrenoida panamensis Pilsbry and Zetek
Iphigenia altior (Sowerby)
+ Iphigenia ambigua Bertin, 1881
Iphigenia laevigata (Gmelin)
Mytella guyanensis (Lamarck)
Mytella speciosa (Reeve)
Mytella tumbezensis (Pilsbry and Olsson)
+ Mytella speciosa Soot-Ryen, 1955
Mytilopsis adamsi Morrison, 1946
Mytilopsis leucophaeata Conrad, 1831
Mytilopsis sallei
Mytilopsis trautwineana (Tryon)
+ Praxis ecuadoriana Miller, 1879
+ Praxis milleri Miller, 1879
Mytilopsis zeteki Hertlein and Hanna, 1949
Neocyrena fontainei (d’Orbigny)
Neocyrena fortis (Prime)
Neocyrena meridionalis (Prime)
Neocyrena nicaraguana (Prime, 1869)
+ Cyrena (Anomala) insignis Deshayes, 1854
Neocyrena radiata (Hanley)
Neocyrena triangula (von du Busch), Philippi
+ Cyrena altilis Gould, 1852
+ Cyrena olivacea Carpenter, 1857
Neocyrena tribunalis (Prime)
Polymesoda (Egeta) anomala (Deshayes)
+ Cyrena (Anomala) isocardioides Deshayes, 1854
+ Cyrena cardiformis Sowerby, 1878
Polymesoda (Egeta) inflata (Philippi)
+ Cyrena maritima C.B. Adams, 1852
+ Cyrena cordiformis Récluz, 1853
+ Cyrena (Anomala) inflata Deshayes, 1854
+ Cyrena peruviana Deshayes, 1854
+ Cyrena panamensis Prime, 1860
+ Cyrena recluzii Prime, 1865
+ Cyrena isocardioides Dall, 1909
+ Polymesoda joseana Morrison, 1946
Polymesoda (Pseudocyrena) cubensis (Prime, 1865)
+ Cyrena maritima d’Orbigny, 1853
Polymesoda (s.s.) caroliniana (Bosc)
Polymesoda (s.s.) mexicana (Broderip and Sowerby)
Polymesoda (s.s.) notabilis (Deshayes)
+ Polymesoda zeteki Pilsbry, 1931
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