WHiTEAVEs.] CRETACEOUS FOSSILS PROM BRITISH COLUMBIA. 155 



gress of the Geological Survey of Canada for 1816-11, most jjrobably 

 belong to the present species. 



Some imperfect valves of aa Astarte collected by Dr. Dawson in 

 1885, on the east side of Winter Harbour, Forward Inlet, Vancouver 

 Island, can also be scarcely distinguished from ^=1. Garlottensis. 



This species belongs to a typical and persistent section of the genus 

 Astarte, which has ranged from the Liassic period up to the present 

 time with very little variation in form or surface marliings, and 

 which is consequently very difficult to separate into well defined 

 species. It agrees so well with the desci-iption and figures of A. Pac- 

 kardi, White, that it was at one time somewhat confidently identified 

 with that species, but as Dr. White, who has examined some of the 

 most perfect specimens from the Quoen Charlotte Islands, thinks that 

 it is most probably distinct therefrom, it seems necessary to distin- 

 guish it by a new specific name. 



Opis Vancouverensis, Whiteaves. 



Opis Vancouverensis, Whiteaves- 1879. Geol. and Nat. Hist. Surv. Can., Mesoz. 

 Foss., vol. I., p. 158, pi. 18, figs. 4 and 4a. 



West end of Lasqueti Island (in the Strait of Georgia) near False 

 Bay: a cast of the interior of the right valve of a shell which almost 

 certainly belongs to this genus and rao.st probably to this species. 



Pleuromya l^vigata, Whiteaves. 



Pleuromya Isevigala, Whiteaves. 1884. Geol. and Nat. Hist. Surv- Can., Mesoz. 

 Foss., vol. I., p. 224, pi. 30, figs. 1, la, 16, Ic - 



Nookneamish Eiver, north-west end of Vancouver Island, G. M. 

 Dawson, 1885 : six badly preserved, but nearly perfect, and eight imper- 

 fect casts of the interior of the shell. These specimens are very vari- 

 able in shape, no two being alike. 



CEPHALOPODA. 



Placentioeras occidentale, Whiteaves. 



Plate 21, fig. 1. 



Placenticeras occidentale, Whiteaves. 1887. Geol. and Nat. Hist. Surv. Can., 

 Ann. Rep., N.S., vol. II, for 1886, page 113 b. 



Shell strongly compressed at the sides, periphery rather sharply 

 angulated but not distinctly keeled ; outer whorl very closely embra- 

 cing, umbilicus rather narrow, a little less than one fourth of the greatest 



