204 B GEOLOGICAL SURVEY OF CANADA. 



Lunatia Lewisii, Gould. Frequent, living, and of largesize, at several 

 localities on the eastern, and especially near the northern end of 

 the islands. 



Priene Oregonensis, Eedfield. Two specimens, the exact locality of which 

 has been forgotten. 



Volutella pyriformis, Carpenter. Virago Sound, in 8 to 15 fathoms, 

 three living shells. Not hitherto recorded to the north of San 

 Francisco. 



Olivella biplicata, Sowerby. Beach between Virago Sound and North 

 Island, dead shells only. 



Olivella boetica, Carpenter. With the preceding, and in the same worm 

 and bleached condition. 



Nassa (Niotha) mendica, Gould. Virago Sound, in 8 to 15 fathoms, 

 abundant; Houston-Stewart Channel, in 15 to 20 fathoms, two 

 dead shells. Beach between Virago Sound and North Island. 



Amphissa versicolor, Dall. Houston-Stewart Channel, in 15 to 20 

 fathoms, seven specimens ; mouth of Cumshewa Harbour, in 20 

 fathoms, three dead shells. In describing this species, Mr. Dall 

 says : — *" I have not seen specimens from north of San Francisco, 

 and Monterey is its headquarters.'' 



Amphissa corrugata, Beeve. Houston-Stewart Channel, in 15 to 20 

 fathoms, abundant and alive. 



Purpura crispata, Chemnitz. Common everywhere, and very variable 

 both in form and sculpture. 



Purpura canaliculata, Duclos. Same station and locality as the preced- 

 ing, but much scarcer. 



Purpura saxicola, Valenciennes. With the last species, apparently not 

 common. 



Ocinebra lurida, Middendorf. Mouth of Cumshewa Harbour, in 20 

 fathoms, and Houston-Stewart Channel, in 15 to 20 fathoms. 



Ocinebra interfossa, Carpenter. Virago Sound, in 8 tfe 15 fathoms, and 

 mouth of Cumshewa Harbour, in 20 fathoms. 



Cerostoma foliatum, Gmelin. Fine living specimens of this species 

 were obtained on the rocks, near low-water mark, at many places. 



Nitidella Gouldii, Carpenter. Virago Sound, in 8 to 15 fathoms, five 

 specimens. 



* American Journal of Conchology. Vol. vii., 1872; p. 114. 



