ON MOLLUSCA OK THE WKST COAST OV NOUTIl AMKIUCV.. 



G83 



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

 yet deterniined) have been found on botli the Asiatii' and American shores of 

 the N. raciftc, in addition to those recorded by JMidcU-ndorif, r. Brit. Assoc. 

 Report, p. 22:). 



'P(MTl)rntcna Conviiiica. 

 Widdliciniiii Cidiloruica. 

 ^Valdlu•iulia pidviaata. 

 AValdhciuiia Crayi. 

 Clvciuicrin <ieucro^a. 

 Schizothau-us N utlallii. 

 Solt'u sicarius. 

 Snuguiuolaria Nuttallii. 

 TclUna Hodcs-eusis. 



(^nrdiuui niodcMluui. 

 Auiusiuui cauriiiuui. 

 IMacunanoinia, uuicrotichi.suia. 

 (Ircpidula grandis. 

 ]>rillia incruiis. 

 1iUU;itia ])allida. 

 Pricuc Crc^oucuflis. 

 Ccrostonia I'oUiituni. 

 SiphouaUa Kcllcttii. 



12S. The Vancouver and Californinn districts have so many charneteristic 

 species in common (111 out of 4!)-J), tliat tliey must be regarded as con- 

 stituting one fauna, diMering as do the Hritjsh and Miiditerranean regions. 

 Full particulars as to the range of the different sjJCH'ies may be (wpected ra 

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

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

 Akhough the 8ta. Barbara group are so near the maiidand, tlui dredge has 

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



