1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 537 



Marginella subtrigona Cpr. 



San Diego. Rare. 

 Volutella pyriformis Cpr. 



On sea-grass, probably abundant, San Diego Bay. 



Volvarina varia Sby. 



Common beneath rocks partially imbedded in shell sand, ocean 

 beaches-. 



Olivella biplicata Sby. 



Abundant on sandy ocean beaches about May. Pure white and, more 

 rarely, black individuals may be found. 



Olivella bcBtica Cpr. 



Abundant on sandy beaches at False Bay and elsewhere in May. 



Columbella fuscata Sby. 



One specimen found on sea-grass at San Diego. 



Columbella (Astyris) carinata Hds., and var. Hindsii Eve. 



Found abundantly on sea-grass during the spring. Yery variable in 

 form and coloring, 

 Columbella (Astyris) tuberosa Cpr. 



Dead specimens abundant ; not found alive. 

 Amphissa versicolor Dall. 



Not rare, with Volvarina varia, Sby. 

 Auachis subturrita Cpr. 



Found among oyster shells from an old pile below low-water mark. 



Myurella simplex Cpr, 



Abundant at low water on the sandy shores of San Diego Bay. 



Svurcula oarpenteriana Gabb. 



Todos Santos Bay, dead on beach. 

 DrUlia moesta Cpr. 



Abundant in the spring at La Playa and elsewhere. Also at Todos 

 Santos Bay. 

 DrilUa inermis Cpr. 



Specimens occasionally found at low water, but apparently' common 

 in deeper water. 

 Mangilia angulata Cpr. 



Not common ; sandy beach at La Playa, with Cylichna inculta Gld. 

 Mitromorpha filosa Cpr. 



Under boulders imbedded in shell sand, ocean beaches, near low- 

 water mark ; rare. Also at Todos Santos Bay. 

 Conus californicus Hds. 



Abundant on sandy beaches at La Playa, False Bay, and elsewhere 

 during the spring. 

 Cypraea spadicea Gray. 



This beautiful shell was found abundant at False Bay during April 

 and May at very low water, but elsewhere and at other times only dead 

 specimens have been found. From beach- worn specimens it appears 



