Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Publication Olsson (1961): summary
     publication summary

Complete Citation

Olsson, A.A. 1961. Panamic-Pacific Pelecypoda. Mollusks of the Tropical Eastern Pacific, particularly from the southern half of the Panamic-Pacific Faunal Province (Panama to Peru). 574 pp. Available electronically.

Attributed Nominal Genera

Attributed Nominal Species

Taxonomic Opinions

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 = Mytilopsis adamsi

Neocyrena fontainei (d’Orbigny) = Polymesoda fontainei

Neocyrena fortis (Prime) = Polymesoda fortis

Neocyrena meridionalis (Prime) = Polymesoda meridionalis

Neocyrena nicaraguana (Prime, 1869) = Polymesoda fortis
+ Cyrena (Anomala) insignis Deshayes, 1855

Neocyrena nicaraguana (Prime, 1869) = Polymesoda arctata

Neocyrena radiata (Hanley) = Polymesoda radiata

Neocyrena triangula (von du Busch), Philippi = Polymesoda triangula
+ Cyrena altilis Gould, 1852
+ Cyrena olivacea Carpenter, 1857

Neocyrena triangula (von du Busch), Philippi = Polymesoda mexicana

Neocyrena tribunalis (Prime) = Polymesoda tribunalis

Polymesoda (Egeta) anomala (Deshayes) = Polymesoda anomala
+ Cyrena (Anomala) isocardioides Deshayes, 1855
+ Cyrena cardiformis Sowerby, 1878

Polymesoda (Egeta) anomala (Deshayes) = Polymesoda inflata

Polymesoda (Egeta) inflata (Philippi) = Polymesoda anomala
+ Cyrena maritima C.B. Adams, 1852
+ Cyrena (Anomala) inflata Deshayes, 1855
+ Cyrena panamensis Prime, 1860
+ Cyrena isocardioides Dall, 1909
+ Polymesoda joseana Morrison, 1946
+ Cyrena cordiformis Récluz, 1853
+ Cyrena recluzii Prime, 1865
+ Cyrena peruviana Deshayes, 1855

Polymesoda (Egeta) inflata (Philippi) = Polymesoda inflata

Polymesoda (Pseudocyrena) cubensis (Prime, 1865) = Polymesoda floridana
+ Cyrena maritima d’Orbigny, 1853

Polymesoda (s.s.) caroliniana (Bosc) = Polymesoda caroliniana

Polymesoda (s.s.) mexicana (Broderip and Sowerby) = Polymesoda mexicana

Polymesoda (s.s.) notabilis (Deshayes) = Polymesoda notabilis
+ Polymesoda zeteki Pilsbry, 1931