Biological Papers. ^„„ 



Purpura lapillus Linujeus. 

 Plate II, fig. 71 



Purpura crispata Chemnitz. 

 Plate I. fig. Po; plate ly, flg.s. lo and 90. 



Purpura saxicola Valenciennes. 

 Plate I, fig. 7. 



Purpura saxicola, var. 



(Not drawn.) 



eies is the most variable esp"^i,y In ^ol^Twhrte"":?" f' 

 pmk purple, yellow and brown specimen ' haTebeonired 

 off of the same small rock at La Push at one tide 

 Olivella hiplicata Somerby. 



Plate I, fig. 27. 



This is not an abundant species. 



Araphyssa corrugata Reene 

 Very common. ''^'^^ '' "»"• ''■ 



Tube of worm. 



Plate IV, fig. 18. 



Saxidomus squalidus. 

 Plate III, fig. FDX. 



This is a verj^ common clam. 



Amycla gausapata Gould. 



XT^4. Plate II, fig. 43 



-Not common. 



Yoldia limitula Say. 

 Plate III, fig. 72. 



This is a Puget Sound shell. 



-12 



