Opinions from R. E. Dickerson 1917
- 'Acmaea simplex belongs to Acmaea'
- 'Actaeon parvum belongs to Actaeon'
- 'Arca washingtoniana belongs to Arca'
- 'Astarte perrini belongs to Astarte'
- 'Cerithiopsis howardi belongs to Cerithiopsis'
- 'Chama pacifica belongs to Chama'
- 'Conus ruckmani belongs to Conus'
- 'Corbula cowlitzensis belongs to Corbula'
- 'Diplodonta dalli belongs to Diplodonta'
- 'Epitonium merriami belongs to Epitonium'
- 'Eulima clarki belongs to Eulima'
- 'Exilia weaveri belongs to Exilia'
- 'Fasciolaria gabbi belongs to Fasciolaria'
- 'Fusinus gesteri belongs to Fusinus'
- 'Galeodea dalli belongs to Galeodea'
- 'Hipponyx arnoldi belongs to Hipponyx'
- 'Hipponyx ornata belongs to Hipponyx'
- 'Leda merriami belongs to Leda'
- 'Lima bella belongs to Lima'
- 'Littorina oligocenica belongs to Littorina'
- 'Marginella pacifica belongs to Marginella'
- 'Murex vaughani belongs to Murex'
- 'Neverita nomlandi belongs to Neverita'
- 'Patella subquadrata belongs to Patella'
- 'Pitaria clarki belongs to Pitaria'
- 'Psammobia martini belongs to Psammobia'
- 'Saxicava arnoldi belongs to Saxicava'
- 'Semele reagani belongs to Semele'
- 'Seraphs andersoni belongs to Seraphs'
- 'Spisula packardi belongs to Spisula'
- 'Strepsidura packi belongs to Strepsidura'
- 'Tellina obruta belongs to Tellina' according to Conrad 1848
- 'Triforis martini belongs to Triforis'
- 'Turris dickersoni is recombined as Surcula dickersoni'