ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA., 



683 



127. The following species (besides others dredged by Mr. A. Adams, but not 

 yet determined) have been found on both the Asiatic and American shores of 

 the jST. Pacific, in addition to those recorded by Middendorff, v. Brit. Assoc. 

 Report, p. 223. 



TerebrateUa Coreanica. 

 Waldheimia Ualifomica. 

 Waldheimia pulvinata. 

 Waldheimia Grayi. * 

 Glycimeris generosa. 

 Schizothaerus NuttaUii. 

 Solen sicarius. 

 Sanguinolaria Nuttallii. 

 Tellma Bodegensis. 



Cardium modestum. 

 Amusium caurinum. 

 Placunanomia macrosehisma. 

 Crepidula gTandis. 

 Drillia inermis. 

 Lunatia pallida. 

 Priene Oregonensis. 

 Oerostoma foliatum, 

 Siphonalia Kellettii. 



128. The Vancouver and Californian districts have so many characteristic 

 species in common (111 out of 492), th,at they must be regarded as con- 

 stituting one fauna, differing as do the British and Mediterranean regions. 

 Full particulars as to the range of the different species may be expected iia 

 Dr. Cooper's Report to the Californian Geological Survey. One fact must, 

 Iwwever, be here specially noted, viz. the great peculiarity of the island-fauna. 

 Alttough the Sta. Barbara group are so near the mainland, the dredge hiis 

 not only produced many species not known on the continent, but also many 



169 



