ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 605 



P.7.S. Plate II. 

 rage. So. Fig. 



6y 10 10. Chione Zordi, Bd. From a Duck's stomacli. Plentiful. Eaquimalt 

 Harb., V. I., lord. 



• • 11 11. Sphariion (Ct/clas) tumidumjTii. Plentiful. Sumass Prairie, Fraser 

 River, British Columbia, Lord. 



.. 12 12,13. Sph(srmm (Cyclas) SpokaniijJii.. Two sp., River Spokane ; two 

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

 lated to tumidum, but more delicate.] 



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



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

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

 pholadis, sometimes like Mytilimeria. Neeah Bay, Swan.'] 

 , . 14 15. Crassatella Hsguimaitif , Bd. One sp. Esquimalt Harb., V. I., Zord. 

 [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 Xerfa /osso, Bd. 10-15 m.; one sp. Esquimalt Harb., V. 1., iya//. 



\_= L. foveata, Baird, MS., on tablet.] 

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



Resembles N. divaricata, Hds., N. castrensis, Hds., iV. mirahilis, 

 Ad. and Rve., and especially N. Cobboldtes fi-om the Crag. [In the 

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

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

 Aeila castrensis, Hds.] 



The Vancouver CoUeotions having been deposited in separate drawers, 

 eseept 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 fimhriata" teste JeflFr. ; out of block of wood from Nai-ni-mo Harb., 



V. I., Lard. 

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



18. Netastoma Darmnii. Esquimalt Harb., Lord. One adult but injured speci- 



men. [For this singular Pholad, with duek-bUl prolongations of the valves, 

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

 Jou'anetUa, under which it is placed in the Cumingian Collection/] 



19. " Saxicava niffosa." Several typical specimens ; Esquimalt Harb., Zorf^, taken 



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



20. " Cattista fpannosa." Esquimalt Harb., Xor(^. One yoxtng st^. [ = Saxidomtii 



squalidus, jun.] 



21. " loupes 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. Petitii.'] 



22. " Cardium Calif ornimiae, Desh." 8-15 fin. Vancouver Is., Lyall. [=var 



blandum. Tablet contains also young sp. of C. corbis.'\ 



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



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

 Stimpson.] 



24. " Anodonia cognata, Qli." [=j4, Oregonensis, Tiea,.'] Lake Osoyoos,Br. Col. 



Lord. Two sp. Also Freshwater Lake, Nootka Sound, Lyall. 

 „ Anodonta?Oregonensis, jun. Freshwater Lake, Nootka, V. I., Xorrf; one sp. 



25. Anodonta ? Niittalliana. Freshwater Lake, Nootka, Vane. Is., Zo;rf; oaesp. 

 aO. Anodonta Wahlamatensis.. Freshwater Lake, Nootka, Vane. Is., i.c(?j foiu' sp 



91 



