160 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Diplodonta dalli, new species. 



Glycimeris andersoni, new species. 



Lima bella, new species. 



Leda merriami, new species. 



Leda washingtonensis Weaver. 



Ostrea lincolnensis Weaver. 



Psammobia martini, new species. 



Pecten branneri Arnold. 



Pitaria clarki, new species. 



Saxicava arnoldi, new species. 



Saxicava, species. 



Semele reagani, new species. 



Semele gayi Arnold. 



Spisula packardi, new species. 



Solen lincolnensis Weaver. 



Tellina obruta Conrad. 



Tellina oregonensis Conrad. 



Acmaea simplex, new species. 



Action parvum, new species. 



Conns ruckmani, new species. 



Crepidula, species. 



Cerithiopsis howardi, new species. 



Epitonium washingtonensis Weaver. 



Epitonium merriami, new species. 



Epitonium condoni Dall. 



Exilia weaveri, new species. 



Eulima clarki, new species. 



Fusinus gesteri, new species. 



Fasciolaria gabbi, new species. 



Galeodea dalli, new species. 



Haminea cf. petrosa (Conrad). 



Hipponyx ornata, new species. 



Hipponyx arnoldi, new species. 



Littorina oligocenica, new species. 



Marginella pacifica, new species. 



Murex vaughani, new species. 



Molopophorus stephensoni, new species, 



Molopophorus, species. 



Neverita nomlandi, new species. 



Nyctilochus, species a. 



