Opinions from A. A. Olsson 1932
- 'Arca (Anadara) toroensis is recombined as Arca (Senilia) chiriquiensis toroensis'
- 'Arca (Diluvarca) sechurana is recombined as Arca sechurana'
- 'Arca colomba belongs to Arca'
- 'Arca dariensis belongs to Arca' according to Brown and Pilsbry 1911
- 'Arca dariensis is recombined as Arca (Scapharca) dariensis' according to Maury 1925
- 'Arca dariensis is recombined as Arca (Diluvarca) dariensis'
- 'Arca gatunensis belongs to Arca' according to Toula 1911
- 'Arca gatunensis is a subjective synonym of Arca dariensis'
- 'Arca larkinii is recombined as Anadara larkinii'
- 'Arca spiekeri belongs to Arca'
- 'Arca valdiviana belongs to Arca' according to Grzybowski 1899
- 'Arca valdiviana belongs to Arca'
- 'Arca vanholsti belongs to Arca' according to Spieker 1922
- 'Arca vanholsti belongs to Arca'
- 'Crossata was reranked as Bursa (Crossata) and belongs to Bursa'
- 'Diluvarca was reranked as Arca (Diluvarca) and belongs to Arca'
- 'Leda acuminata belongs to Leda' according to Nelson 1870
- 'Leda balboae belongs to Leda' according to Brown and Pilsbry 1911
- 'Leda peruviana belongs to Nuculana'
- 'Leda peruviana belongs to Leda' according to W.H. Dall 1895
- 'Leda peruviana belongs to Leda' according to Spieker 1922
- 'Natica coronis is recombined as Polinices (Polinices) coronis'
- 'Pecten woodringi is recombined as Pecten (Plagioctenium) woodringi'
- 'Perunassa belongs to Buccinidae'
- 'Potamides ormei infraliteratus is recombined as Potamides infraliteratus'
- 'Ranella ventricosa is recombined as Bursa (Crossata) ventricosa'
- 'Turritella altilirata belongs to Turritella' according to Grzybowski 1899
- 'Turritella bifastigata belongs to Turritella' according to Nelson 1870
- 'Turritella bifastigata belongs to Turritella' according to Spieker 1922
- 'Turritella bifastigata belongs to Turritella' according to Hodson 1926
- 'Turritella fica belongs to Turritella'
- 'Turritella filicincta belongs to Turritella' according to Spieker 1922
- 'Turritella filicincta varicosta belongs to Turritella filicincta' according to Spieker 1922
- 'Turritella filicincta varicosta is recombined as Turritella varicosta'
- 'Turritella gonisotoma belongs to Turritella' according to Valenciennes 1833
- 'Turritella gonisotoma belongs to Turritella' according to Reeve 1849
- 'Turritella gonisotoma belongs to Turritella' according to Steinmann 1929
- 'Turritella gonisotoma belongs to Turritella'
- 'Turritella gothica belongs to Turritella' according to Grzybowski 1899
- 'Turritella hubbardi belongs to Turritella'
- 'Turritella illesca belongs to Turritella'
- 'Turritella inca belongs to Turritella' according to Grzybowski 1899
- 'Turritella inca belongs to Turritella' according to Spieker 1922
- 'Turritella inca belongs to Turritella'
- 'Turritella infracarinata belongs to Turritella' according to Spieker 1922
- 'Turritella infracarinata belongs to Turritella' according to Steinmann 1929
- 'Turritella infracarinata belongs to Turritella' according to Grzybowski 1899
- 'Turritella nelsoni belongs to Turritella' according to Spieker 1922
- 'Turritella prenuncia belongs to Turritella'
- 'Turritella robusta belongs to Turritella' according to Grzybowski 1899
- 'Turritella robusta belongs to Turritella' according to Spieker 1922
- 'Turritella robusta abrupta belongs to Turritella robusta' according to Spieker 1922
- 'Turritella robusta abrupta is recombined as Turritella abrupta'
- 'Turritella rotundata belongs to Turritella' according to Grzybowski 1899