OP CONCHOLOGY. 69 



358 747 AmpMssa corrugata, Rve. 



Str. Fiica to San Diego — Lat. 55° N. 

 Many dead, bch. Smithsonian coll. 



313 751 Purpura saxicola, Val. 



Str. Fuca to S. Barbara — Ounalaska. 

 6 living, rocks ; 5 dead, 1. w. Typical, salt water. 



313a 752 Purjiura saxicola, \^y. fuscata, Fbs. 



Str. Fuca to San Pedro, Cal. — Sitka. 

 2 dead. In water more or less brackish. 



313b 753 Purpura saxicola, var. ostrina, Gld. 

 Str. Fuca to Santa Barbara. 



2 dead. In water more or less brackish. 

 513 754 Purpura saxicola, var. ? emarginata, Desh. 



Str. Fuca to S. Diego— N. Zealand? 

 8 living, rocks, 1. w. Appears distinct. 

 282 756 Monoceros engonatum, Conr. 

 Baulines Bay to San Diego. 



3 living, rocks, 1. w. Common everywhere. 

 339 758 31onoceros lapilloides, Conr. 



Monterey to Santa Barbara. 

 Many living, rocks, 1. w. 

 417 759 Ocinebra lurida, Midd. 



Str. Fuca to Catalina I. — Sitka. 

 6 dead, bch. ; 1 living, 7 fms. Santa Cruz, more com- 

 mon, dead on bch. 

 417a 760 Ocinebra lurida, var. ? aspera, Baird. 

 Str. Fuca to Baulines Bay — Sitka. 

 Sta. Cruz, dead, bch. Perhaps distinct. 

 417b 761 Ocinebra lurida, var. munda, Cpr. 



Str. Fuca to Baulines Bay. 

 384 763 Ocinebra interfossa, Cpr. 



Str. Fuca to Monterey — Sitka. 

 6 dead, bch. ; 5 living, 7 fms. Smithsonian coll, 

 *384b 765 Ocinebra interfossa, var. muricata, Cp. 

 Lohitos to Catalina I. 

 Santo Cruz, common, dead bch. Perhaps distinct. 

 *384c 766 Ocinebra interfossa, var. clathrata, Cp. 

 Santa Cruz to San Diego. 

 Santa Cruz, rare, dead. Like 3fiiricidea alveata, 

 481 768 Cerostoma foliatum, Gmel. 



Str. Fuca to Santa Barbara — Asia ? 

 1 living, 4 fms. Bch., common broken. 



