6 



Collected by Robert E. C. Stearns. 



Purpura saxicola, var. ostrina, 



Bodega Bay, California. ^ Gld. 

 Collected by Robert E. C. Stearns. 



Purpura saxicola, var? emargiu- 



Monteiey , Cal. [ata , Dcsh . 

 From Robert E. C. Stearns. 



Purpura triserialis, Bla'mv. 



San Diego, California. 

 Colleeted by Robert E. C. Stearns. 



Moiioceros engonatum, Conr. 



Baiilines Bay, California. 

 Collected by Robert J]. C. Stearns. 



Monoceros lapilloides, Conr. 



Monterey, California. 



Collected by Robert E. C. Stearns. 



Ocinebra lurida, Midd. 



California. 

 Collected by Robert E. C. Stearns. 



Ocinebra lurida, var. aspera, 



California. \Baird. 



Collected by Robert E. C. Stearns. 



Ociuebra lurida, w«-.munda,Q>/7*. 



California. 



Collected by Robert E. C. Stearns. 



Ocinebra interfossa, Cpr. 



California. 

 Collected by Robert E. C. Stearns. 



Ocinebra interfossa, v<7?*.atropur- 



California. [purca, Cpr. 



Collected by Robert E. C. Stearns. 



Cerostoma foliatum, Gmcl. 



California. 

 From Robert E. C. Stearns. 



Cerostoma Nuttalii, Conr. 



San Diego, California. 

 From Robert E. C. Stearns. 



Chrysodomus dims, Rve. 



California — Vancouver Island. 

 From Robert E. C. Stearns. 



Volutharpa ampullacea, Midd. 



Aleutian Islands. 

 Collected by Robert E. C. Stearns. 



Purpura canaliculata, Dudos. 



Alaska. 



y>l 521^ 



