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ON MOLLXJSCA OP THE WEST COAST OF XORTII AMERICA. 599 



Tnge. 



«J76. Ililix Columhiana, Iji^a,=labio^a, Hid. " In wet mpadows from Vancouver 

 to the coast, not nesir Pii;.'et Sound," VV. T., J. G. Vinrpvr. 



877. Hn^ijr VancotiVfreims, Lea l-j-sporfclla, Gld., ti ste I>lii!id\ " We-^t of Cn-- 



cade Mountain; most abundant under alder-'TOves; also on Wliidbv"3 

 Island." W. T., J. G. Coop^^r. 



„ IlcUr deria, (ild.,= Tia<f:''rn'lfii, Pfr. Two sp. in damp wood*!, near Van- 

 couver, W. T., J. G. C'liopi'i: 



„ Jlefix tmlicii/'i f II. Blnn. Hare, with the last, Vancouver ; also Washington 

 Territory. J. //. Cooper. 

 Siirciiied NiithiUiana, Lea. Rare and dead, at Vancouver, J. G. Cooper. 

 J^imax ColuinfiHDtus, Gld. " Ab;indant in dense, daiup spruce-forests, near 

 Pacific coast ; gi-ows to 6 inches, and is smooth, not rugose, when living," 

 J. G. Cooper. 



878. Limiuea umhrosa, Gld. Lake Oyosa, Okanagan River, ,7. G. Cooper. 



,, LimiKea emarffinata, Say. Lake Oyosa, Okanajjan River, J. G. Cooper, 

 „ Limnaa jujpiliiriii, Say. Lake Oyosa. Okanajrau River, J. G. Cooper. 

 P/ii/sa elonijafn, Say. Near Pu^et Soimd. J. G. Cooper. 

 P/ii/sa heterostropha, Say. Ponds in W. T.. J. G. Cooper. 

 Phi/sa bullata, Gld. MS. Lake Oyosa, \V. T., J. G. Cooper. 

 Anqilns caurinus, Coop., hi.s. ["r' = ^. Nuttulli, Ilald.," Coop. MS.] Black 



River, near Puget Sound, J. G. Cooper. 

 Pftinorbis corptdentim, Siiy. Lake Oyosa, W. T., J. G. Cooper. 

 Pldttorbis trirolcis. Say. Exceedingly abundant in shallow lakes near Van- 

 couver, W.T., iT! G. Cooper. 

 „ PIdiiorbis p//tiiiil(itu.<i, Coo]i. ,11. !>. " A small carinated species, found onlv in 

 lakes on Whidbv's Island." J. G. Cooper. [Comp. P. operciduris, Gld.] 

 379. Bulla lu'bidosa, Gld. Bav of S. Pedro. Trash: 

 „ Bulla tvnella, A. Ad., in Sby. Thes. pi. 1;54. f. 104 [?]. Puget Sound, one sp,, 



Suckle;/. [? = Ha/m)iea hi/da(is.^ 

 ff Odrea edulis, Coop, [non Linn. : = 0. lurida, Cpr.]. De Fuca and Puget 

 Sound, Gihbs; Shoalwater Bay, Cooiier. "Small in Puget Sound: finer in 

 Shoalwater Bciy, which supplies S. Francisco market; large at Vancouver's 

 Island ; very large near mouth of Hood's Canal." 

 M {I^anufanomia macroschisma, \)ti%h, De Fuca, Gibbs; Xootka Sound, Capt. 



Russell. 

 „ Perfett caurinus, Gld. De Fuca, Su^klet/. One of the specimens measures 

 2.} inches in circumference and 8 in. a*'ross. 



830. Pecten rcntricosus, Shy.,+tumiduji, Sby. [= ?var. (equisulcatus, Cpr.]. L'pper 



Cal., Trask ; San Diego, Cassidi/. 

 ff 3Iytilus edulis. Ln. Shoalwater liay. Cooper. "As abundant as in Europe 



and N. England, with the same variations, and when eaten occasionally 



causing urticaria." — J. G. Cooper. 

 ff Mtftilu* Californianus, Conr. Puget Sound, Port Townsend, Suckley, Gibbs ; 



Upper Cal., Trask. One specimen is Oi^ inches long. 

 „ Mo(liola capax [Cooper, non] Conr. [ = J/, modiolus, Ln.]. Not common. Str. 



de Fuca, Gibbs, Cooper. 

 „ Modiol'jflabellafa,G]<l. Puget S. and Str. de Fuca, ti'j'&fts. [ = M. recta, ruT.I 

 „ Lithophagus, sp. ind., like falcatuK [Probably Adula stylina, Cpr.] Rocks 



near mouth of Umpqua I^iver, Oi-egon, Dr. Volhtm. 



831. Area grandis, Coop, [non Hrod. and Sby.,= A. midticostata, Sby.]. One sp. 



living. San Diego, Cusmdy. 

 ff Margarifana margaritifera, hefi. = Al<tsmodontafalcafa, Gld. River Chehalis, 

 &c.. W. T.. Cooper; Shasta River, Or., Trask. After careful comparison 

 with eastern U. S. specimens, and those from Xewfoimdland and Europe, 

 Judge Cooper agrees with Dr. Lea that the N.W. shells are at most a slight 

 variety. " The most abundant of the freshwater bivalves, and the only one 

 vet found in the Chehalis, the streams nmnino into Puget Soimd, and most 

 branches of the Columbia. No species is found in the streams running uito 

 Shoalwater Bay. Eaten bv the Indians E. of the Cascade Mountains," 

 J. O. C. 



