ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 605 
P.Z.S. Plate II. 
Page. No. Fig. 
69 10 10. Chione Lordi, Bd. From a Duck’s stomach. Plentiful. Esquimalt 
Harb., V. I., Lord. 
.. 11 11. Spherium (Cyclas) tumidum, Bd. Plentiful. Sumass Prairie, Fraser 
River, British Columbia, Lord. 
.. 12 12,18. Spherium (Cyclas) Spokanit, Bd. Two sp., River Spokane; two 
young sp., Kootanie River, British Columbia, Lord. (Closely re- 
lated to teantdum, but more delicate. ] 
70 13 14. Lyonsia savicola, Bd. Holes in rocks in Esquimalt Harb., V. I., Lord. 
Japan, teste dA. Ad. Closely resembles L. navicula, Ad. and Rye. 
[Abundant, and very variable in outline, sometimes like Savicava 
pholadis, sometimes like Mytilimeria. Neeah Bay, Swan. ] 
.. 14 15. Crassatella Esquimaltit, Bd. “One sp. Esquimalt Harb., V. I., 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 ruge are singularly 
irregular, and not always continuous. | 
71 165 Leda fossa, Ba. 10-15fm.; one sp. Esquimalt Harb., V. L, Lyall. 
[=L. foveata, Baird, MS., on tablet. ] 
71 16 Nucula Lyallii, Bd. 8-10 fm.; one sp. Esquimalt Harb., V. L., Lyall. 
Resembles NW. divaricata, Hds., N. castrensis, Hds., N. mirabilis, 
Ad. and Rve., and especially NV. Cobboldie 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 fimbriata,” teste Jeffr.; out of block of wood from Nai-ni-mo Harb., 
V. L., Lord. 
Teredo. Shelly tube of large sp. Esquimalt Harb., Lord. 
Netastoma Darwin. 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., Lord, taken 
out of interior of hard stone, into which they appear to have bored. 
20. “ Callista ?pannosa.” Esquimalt Harb., Lord. One young sp. [ = Saridomus 
squalidus, jun. | 
21. “ Tapes rigida.” Esquimalt Harb., Zord, common. [An instructive series, 
some with very close and fine, others with distant, strong ribs. Some haye 
ribs large and rounded, approaching the sculpture of Cardia. Some change 
suddenly from one form to another. = 7. staminea, var. Petitit.] 
22. “ Cardium Californiense, Desh.” 8-15 fm. 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; 
State resembles the Hast Coast specimens of Ven. borealis dredged by Dr. 
timpson. 
24, « Ahotenia A iin Gld.” [= A. Oregonensis, Lea.] Lake Osoyoos, Br. Col., 
Lord. Twosp. Also Freshwater Lake, Nootka Sound, Lyall. i 
4, Anodonta ? Oregonensis, jun. Freshwater Lake, Nootka, V. I., Zord; one sp. 
25. Anodonta ? Nuttalliana. Freshwater Lake, Nootka, Vance. Is., Lord; one sp. 
26, Anodonta Wahlamatensis, Freshwater Lake, Nootka, Vance, Is., Zord; four sp. 
18 
