18 



166 Volutella pyriformis Cpr 



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



167 Volvarina varia Sby 



Common beneath rocks partially imbedded in shell sand, ocean 

 beaches. 



168 Olivella biplicata Sby 



Abundant on sandy ocean beaches about May. Pure whit* 

 and, more rarely, black individuals may be found. 



169 Olivella boetica Cpr 



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



170 Columbella fuscata Sby 



One specimen found on sea-grass at San Diego. 



171 Columbella (Astyris) carina ta Hds 



Pound abundantly on sea-grass during the spring. Very 

 variable in form and coloring. 



172 Columbella (Astyris) tuberosa Cpr. 



Dead specimens abundant; not found alive. Straits of Puca. 

 Santa Barbara. 



173 Amphissa versicolor Dall 



Not rare, with Volvarina varia, Sby. San Francisco bay to 

 Todos Santos bay. 



174 Anachis subturrita Cpr 



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

 mark. 



175 Surcula earpenteriana Gabb 

 Todos Santos bay, dead on beach. 



176 Drillia moesta Cpr 



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

 Todos Santos bay. 



177 Drillia inermis Cpr 



Specimens occasionally found at low water, but apparently 

 common in deeper water. 



178 Mangilia an »u lata Cpr 



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

 Gld. 



179 Mitromorplia filosa Cpr 



Under boulders imbedded in shell sand, ocean beaches, near 

 low-water mark; rare. Also at Todos Santos bay. 



180 Trivia calif ornica Gray 



Dead specimens of this are not uncommon, but I have not 

 found it living. 



181 Trivia solandri Gray 



Rare; living specimens have been found at La Playa and 

 False bay during the spring tides. Dead specimens not rare at 

 Todos Santos bay. 



