62 ROYAL SOCIETY OF CANADA 



198. Bela Trevelyava. Turtoii, s|). 



Pltinafoma 7'rriT//i(i ii K)ti,Tnrton, Majj;. Nat. Hist., vol. vii., p. Hr,\ (IH'M). 



199. Bela exarata. Miiller, sji. 



Dt/raiicia t'.toiata, Moller, Inde.x Moll. Gn.l., p. 12 (1S42). 



200. Bela crebricostata. Carpenter, sp. 



MaiH/l/iii rrchricostata, Cpr., Kept. Brit. Assoc, 1«W, j). (55S (August, 18f>l) ; and 

 Ann. Mag. Nat. Hist., series H, vol. xv., p. 29 (.lanuary, 18(55). 



201. Bela tabulata, Carpenter. Sp. 



.'' Ma>i{/ilta tabulata, Cpr., Rept. Brit. Assoc, m%^, p. G5S (August, L^<)4) ; and Ann. 

 Mag. Nat. Hist., series H, vol. xv., p. 29 (January, 18(i5>. 



202. Bela violacea, Mighels and A(_lanis, sp. 



Plrurotoina violavm, M. and Ad., Proc Bost. Soc Nat. Hist., vol. i., p. 50 (Novem- 

 ber, 1841); and Bost. .Jour. Nat. Hist., vol. iv., no. i., p. 51, pi. iv., tig. 21 

 (January, 1842). 



The tirst named, B. fidicula, is the common species with us, and 

 represents the European B. turricula, Montagu. It is reported from the 

 Queen Charlotte Islands, Queen Charlotte Sound and Johnston Straits 

 (Dawson), and several Vancouver Island localities. 



The next three species are very nearly allied to each other. 



B. excurvata was described from a single specimen from Puget 

 Sound (Kennerley). 



B. Trevelyana is added, l>y Mr. Whitcaves. on the strength of one 

 dead shell dredged in A'irago Sound b}- Dr. Dawson. 



B. exarata is the name given by Dr. Dal I to shells from Comox and 

 Victoria sent to him b}- Dr. Xewcombe for determination. 



It seems to be just possible that our British Columbian specimens, 

 thus variously determined, may all belong to a single species, namely 

 that intended by Carpenter in his description of B. excurvata, which is 

 said to be " like Trevelliana '' and which may or may not be equivalent 

 to Miiller's earlier B. exarata. 



B. crebricostata (specimens identitied by Dr. Dal!) is rare at Victoria 

 and we have not found it elsewhere. The type specimen was collected 

 by Swan. 



B. tabulata (specimen also identified by Dall) is from Victoria, but 

 is al.>^o on record from Queen Charlotte Sound (two specimens). Mr. 

 WhiteaveS; however, in writing of these specimens remarks •' perhaps a 



