48 ROYAL SOCIETY OF CANADA 



dredged except when very j'oung or when dead. The dead shells in 

 greater or less numher hav^e been found at Victoria, Departure Bay, 

 Comox and Clayoquot, 



SPISULA, Gray. 



100. .Spisula falcata, Gould, sp. 



Jdactra fdlvata, Gould, Proc. Bost. Soc. Nat. Hist., vol. iii., p. 21(5 (May, IS.tO); 

 and II. S. Expl. Exped., Mollu.sca, p. 893, fig. 506-5(Xib (1852). 



This species has been found dead by Dr. Dawson at the Queen 

 Charlotte Islands, and by Dr. Newcombe at Comox and Victoria. 



In Carpenter's " Supplementally Report " it is given as from Puget 

 Sound (Kennerley) and Vancouver Island (Swan). 1 have not myself 

 as yet succeeded in tinding specimens. 



101. Spisula planulata. Conrad, sp. 

 Marf7-a planulata, Conr., .Journ. Acad. Nat. Sci. Phila., vol. vii., pt. 2, p. 240(LS;^7). 



Of this species I have dredged numerous young specimens in 

 Departure Bay. Dr. Newcombe has found it at Clayoquot, and Mr. 

 Harvey at Comox. 



Dr. Dall, finding the nomenclature of the Pacific coast Mactridce in 

 a very unsatisfactory condition, has been lately working up the subject. 

 A first paper by him, entitled, " On the Species of Mactra from Cali- 

 fornia," has appeared in the " Nautilus " for April of the present year 

 and should be consulted for notes on our species.' 



DARIN A, Gray. 



102. Darina declivis. Carpenter. 



Kept. Bi-it. Assoc, 1803, p. (W7 (August, 1864); and Proc. Zool. Soc. London. 



1865, p. 203. 



A single shell, measuring 1'77 x "85 x -34 inches, was found at 



' Since the above was written Dr. Dall has published several other papers on 

 North American Mactrida'. In one of these entitled " Synopsis of the Mactridci' of 

 Northwest America, South to Panama," published in the " Nautilus " for August, 

 1894, Dr. Dall names the northern species as follows : — 



Mactra ( Mactrotoma) Calif oriiica, Conrad. Fuca Strait to Central America. 



Sptsida (Hemhnactra), polyni/ma, Stimpson, var. Alashana, Dall. Icy Cape to 

 Neeah Bay. 



Spisula {Hemimactra catilliforinis, Conrad. Neeah Bay to San Diego. 



Spisida {Hemimacfra) planulata, Conrad. Monterey to San Diego. 



Spiftida (Sym7nor2)hoviactra) falcata, Gould. Comox to San Pedro, Cal. 



I have not yet found specimens of the three first named species among our \'an- 

 couver shells, nor am I very confident as to the correctness of the identification of 

 the specimens I have recorded above as S. plamdata. 



