0\ MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 605 



P.Z.S. Plate II. 



Page. No. Fig. 



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



Ilarb., V. I., Lord. 



• . 11 11. Sp'tceriion {Ci/clas) ttimid)i7n,'&di. Plentiful. Sumass Praiiie, Fraser 

 River, British Columbia, Lord. 



,. 12 12,13. Sphtrriiwi (Cyclas) Spokani\,'BA. Two sp.. River Spokane ; two 

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

 lated to Uonidmn, but more delicate.] 



70 13 14. Ly^isia saxicola,\iA. Holes in rocks in Esquimalt Harb., Y. I., ior</. 



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

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

 pholadis, sometimes like MytiUmeria. Neeah Bay, Swan.'\ 

 ., 14 15. Cntssatella JExquimaltifj'Bd. One sp. Esquimalt flarb., V. L, Zo7y/. 

 [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. Shy. in constituting the genus, 

 but becomes obsolete in the typical species. The same peculiarity 

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

 irregular, and not always continuous.! 



71 15 Leda fossa, 'QA. 10-15 fm.; one sp. Esquimalt Harb., V. I., iya//. 



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

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



Resembles N. divaricata, Hds., N. castrensis, Hds., N. minibilis, 

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

 early stage, the sculpture has several angles, afterwards onlj- one. 

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

 Aci a castrensis, Hds.] 



The Yancouver 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 Yancouver and Californian Table. The fol- 

 lowing require special mention. 



No. 



17. " Teredo fimbriata,^'' teste Jeffi-. ; out of block of wood from Nai-ni-mo Ilarb., 



V. L,'^Lord. 

 Teredo. Shelly tube of large sp. Esquimalt Harb., Lo7-d. 



18. Netastoma Daririnii. 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 rugosa.'" Several typical specimens ; Esquimalt Harb., Zo?y/, taken 



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



20. " Cal/isfa ':'pa)inosa." Esquimalt Jl&vh., Lord. One young sp. l = Saxidoinus 



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. Petitn.'\ 



22. " Cardiiim C'alifornietise, Desh." 8-15 fm. Yancouver Is., Lyall. [ = var. 



blandum. Tablet contains f>lso young sp. of C. corbis.'] 



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



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

 Stimpson.] 



24. " Anodonta coy nata, GkV l=A. Oregonensis, 'Le&.'] Lake Osoyoos, Br. Col. 



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

 „ Anodonta ? Oreyoimisis, ^un. Freshwater Lake, Nootka, Y. I., Lord; one sp. 



25. Anodonta 'i yuttalUana. Freshwater Lake, Nootka, Vane. Is., Zo;y/; ouesp. 

 Ji6. Anodonta Walduiuaunsis. Freshwater Lake, Nootka, Yanc. Is., Z.r^j four sp 



91 



