Section IV., Il 99. [ 233 ] Traxs. R. S. C. 



. X. — Kotes on the Marine Mollusca of the Pacific Coast of Canada. 



(Additions and Corrections to the " Prelimincary Catalogue" in the Transactions of 

 the Royal Society of Canada, 2r.d Series, Vol. I., Section IV., pp. 17-100.) 



By the Kev. George W. Taylor, F.Z.S., F.E.S.C. 

 (Read May 26, 1899.) 



The purpose of the present paper is to supplement the Preliminary 

 Catalogue of our "Western Mollusca, read before this society five years 

 ago, and published in the Transactions for 1895 (2nd series, vol. i, Sec. 

 lY, pp. IMOO). 



A considerable number of species have been added to the British 

 Columbian list since the date of that paper, mainly through the researches 

 of Dr. C. F. Newcorabe, of Victoria, and Mr. Walter Harvey, of Nanaimo. 

 Several difficult groups have been studied and new s|)ecics therein 

 described by Dr. Dall during the same period ; and this noted conchologist 

 has also most kindly examined many puzzling specimens submitted to 

 him from my cabinet, comparing them with types in the United States 

 National Museum, and thus enabling me to correct some errors in nomen- 

 clature into which I had fallen. 



Additional information has been obtained as to the range and station 

 of many of our species ; some thought to be local prove to be of wide dis- 

 tribution, and others, apparently very rare, have been found in new 

 localities in comparative abundance. 



It has been my endeavour to incorporate these new facts, so far as 

 possible, in the following notes. 



In the Preliminary Catalogue the number of species recorded was 

 three hundred and fifty-one. The species of Nudibranchiata were not 

 included, as I had not given the group any attention. 



In the present paper three species are dropped from the list, while 

 seventy-one sjiecies are added, namely : 



Pelecypoda 21 



scaphopoda 2 



Gasteropoda — 



Pteropoda 1 



Opisthobranchiata 2 



Nudibranchiata 17 



Pulmonata 6 



Ctenobranchiata 19 



Polyplacoi^hora 3 — 71, 



bringing our total to 419. 



