ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 605 



P.7.S. Plate II. 

 P..ge. No. Fig. 



69 10 10. Chione Lordi, Bd. From a Duck's stomach. Plentiful. Esquimalt 



Hark, V. I., Lord, 



,. 11 11. SpJicerium (Cyclas) tumidum, Bd. Plentiful. Sumass Prairie, Fraser 

 River, British Columbia, Lord. 



.. 12 12,13. Sphcerium {Cyclas) Spokanft, Bd. Two sp., River Spokane j two 

 young sp., Kootanie River, British Columbia, Lord. [Closely re- 

 lated to tumidum, but more delicate. ] 



70 13 14. Lyonsia saxicola, Bd. Holes in rocks in Esquimalt Harb., V. I., Lord. 



Japan, teste A. Ad. Closely resembles L. navicula, Ad. and Rve. 

 [Abundant, and very variable in outline, sometimes like Saxicava 

 pholadis, sometimes like Mytilimeria. Neeah Bay, SwanJ] 



. . 14 15. Crassatella EsquimaUi^, Bd. One sp. Esquimalt Harb., V. L, Lord. 

 [A true Astarte, with external ligament, with one ant. lat. tooth in 

 one valve, and one post. lat. tooth in the opposite, well developed. 

 This character was noticed by J. Sby. in constituting the genus, 

 but becomes obsolete in the typical species. The same peculiarity 

 of margin is seen in Crassatella. The external rugae are singularly 

 irregular, and not always continuous.! 



71 15 Leda fossa, Bd. 10-15 fm. j one sp. Esquimalt Harb., V. L, Li) all. 



[=. foveata, Baird, MS., on tablet.] 



71 16 Nucida jLyallii, Bd. 8-10 fm. ; one sp. Esquimalt Harb., V. I, Lyall. 



Resembles N. divaricata, Hds., N. castrensis, Hds., N. mirabilis, 

 Ad. and Rve., and especially N. Cobbokhee from the Crag. [In the 

 early stage, the sculpture has several angles, afterwards only one. 

 Both Dr. Kennerley's and Dr. Lyall's specimens appear to be = 

 Acila castrensis, Hds.] 



The Vancouver Collections having been deposited in separate drawers, 

 except the series mounted for the table-cases, permission has been given 

 (with the kind assistance of Dr. Baird) to examine them minutely, and pre- 

 pare a revised list of the species. The marine shells will be found in the 

 sixth column of the general Vancouver and Californian Table. The fol- 

 lowing require special mention. 



No. 



17. " Teredo Jimbriata" teste Jeffr. j out of block of wood from Nai-ni-mo Harb., 



V. I., Lord. 

 Teredo. Shelly tube of large sp. Esquimalt Harb., Lord. 



18. Netastoma Darwim'i. Esquimalt Harb., Lord. One adult but injured speci- 



men. [For this singular Pholad, with duck-bill prolongations of the valves, 

 a subgenus of Pholadidea is proposed, as its characters do not accord with 

 Jouanettia, under which it is placed in the Cumingian Collection.] 



19. " Saxicava ruf/osa." Several typical specimens ; Esquimalt Harb., Lord, taken 



out of interior of hard stone, into which they appear to have bored. 



20. " Callista ?pannosa." Esquimalt Harb. ; Lord. One young sp. [=sSaxidomtu 



squalidus, jun.] 



21. " Tapes riyida" Esquimalt Harb., Lord, common. [An instructive series, 



some with very close and fine, others with distant, strong ribs. Some have 

 ribs large and rounded, approaching the sculpture of Cardia. Some change 

 suddenly from one form to another. = T. staminea, var. PetitiiJ] 



22. u Cardiwn Calif orniense, Desh." 8-15 fm. Vancouver Is., Lyall. [=var 



blandum. Tablet contains also young sp. of C. corbis.l 



23. u Cardita ventricosa, Gld." 8-15 fm. Vane. Is., Lyall. [Not ventricose, 



exactly resembles the East Coast specimens of Ten. borealis dredged by Dr. 

 Stimpson.] 



24. "Anodonta cognata, Gld." [=A. Oreaonmsis, Lea.] Lake Osoyoos,Br. Col. 



Lord. Twosp. Also Freshwater Lake, Nootka Sound, Lyatt. 

 , : Anodonta ?Ore(/onensis, jun. Freshwater Lake, Nootka, V. L, Lord; one sp. 



25. Anodonta ? Nuttalliana. Freshwater Lake, Nootka, Vane. Is., Lord; one,p. 

 Uo. Anodonta Wahlamatensis. Freshwater Lake, Nootka, Vane. Is, ; L nlj four ep 



91 



