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
	 
 |