INDEX TO ILLUSTRATIONS. 



PLATE V. 



Con us Californicus. 



rosa. Beach. 

 Drillia penicillata. South- 

 ern. 



Luponia spadicea. 

 Trivia Californica. Beach. 



ellina. Beach. 

 Erato col umbel la. 

 PLATE VI. 

 Lunatia Lewisii. Sandy 



?. 

 Cerithidea sacrata. Mud 



of salt marshes. 

 Bittium filosum. Sand, 

 Scalaria crebricostata. 

 Opalia borealis. 

 Littor ina planaxis. 



scutulata. 

 Abundant on rocks. 



PLATE VII. 

 Lacuna unifasciata. 



Rocks and sand. 

 Phachypoma gibberosum. 



Dead, on beach. 

 Phasianella compta. 

 Sand. Very rich color- 

 ing on shell. 



s undosus. 

 Ribbed operculum. 

 Chlorostoma fun ebrale. 

 Very abundant on rocks. 

 Chlorostoma brunneum. 

 !p. 



PLATE VIII. 

 Cholorostoma aureotinc- 



tum. Rocks/ 

 Calliostoma costatum. 

 Low water. 



