ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 599 



Tuge. 



370. ITtlix Columbiana, 'Lcii,=labiosa, Gld. "In wet meadows from Vancouver 

 to the coast, not near Puget Sound," W. T., </. G. Cooper. 



577. Helix VnncoHverensis, Lea {-\-sportella, Gld., teste Blaud]. " We-^t of Cas- 



cade Mountain; most abundant under alder-groves; also on WllidlJ^ "s 

 Island," W. T., J. G. Cooper. 



f, Helir devia, Gld., = Ba^kerrillei, Pfr. Two sp. in damp woods, near Van- 

 couver, W. T., j; G. Cooper. 



„ Helix hidictdatii. Binn. Rare, with the last, Vancouver ; also AVashington 

 Territory, J. G. Cooper. 



„ Siieeinea Nuttalliana, Lea. Rare and dead, at Vancouver, J. G. Cooper. 



,, Xiinax Cohunbianus, Gld. " AbLindaut in dense, dauip spruce-forests, near 

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

 J. G. Cooper. 



578. Limncea umbrosa, Gld. Lake Oyosa, Okanogan River, J. G. Cooper. 



„ Limiuva emarf/inata, Say. Lake Oyosa, Okanagan River, J. G. Cooper, 



„ Limnaajuepdaris, Say. Lake Oyosa, Okanagan River, /. G. Cooper. 



„ P/ii/sa elongata, Say. Near Puget Sound, J. G. Cooper. 



„ Phj/tia heterostrophn, Say. Ponds in W. T., J. G. Cooper. 



„ Phi/sa bidlnta, Gld. MS. Lake Oyosa, W. T., J. G. Cooper. 



„ A/icj/lus caurinus, Coop., ?n. s. ["? = ^4. Niittalli, Hald.," Coop. MS.] Black 

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



„ Plunorbis corpidentus,^y. Lake Oyosa, W. T., J! G. Cooper. 



„ Planorbis trivolvis, Say. Exceedingly abundant in shallow lakes near Van- 

 couver, W.T., Ji G. Cooper. 



„ Planorbis planidatus, Coop., n. s. " A small carinated species, found only in 

 lakes on Whidby's Island," J. G. Cooner. [Comp. P. opercidaris, Gld.] 

 379. Bidla inbtdom, Gld. Bav of S. Pedro, Trask. 



„ Bulla tenella, A. Ad., in Sby. Thes. pi. 134. f. 104 [?]. Puget Sound, one sp., 

 Suckley. [?=Haminea hi/datis.'\ 



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

 iSound, Gihbs; Shoalwater Bay, Cooner. "Small in Puget Sound; finer in 

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

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



„ \JPliiewi\anomia mucroschisma, Uesh. De Fuca, Gibbs; Nootka Sound, Capt. 

 Pussell. 



„ Pecten caurinus, Gld. De Fuca, Suckley. One of the specimens measures 

 23 inches in circumference and 8 in. across. 

 830. Pecten renfricosus, Shy., + turn idus, Sby. [= ?var. cequisulcatus, Cpr.]. Upper 

 Cal., Trask; San Diego, Cassidy. 



„ 3Iytilus edulis, Ln. Shoalwater Bay, Cooper, ''As abundant as in Europe 

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

 causing urticaria." — J. G. Cooper. 



ff Mytilus Cahfornianus, Conr. Puget Sound, Port Townsend, Suckley, Gibbs ; 

 Upper Cal., Trask. One specimen is 9^ inches long. 



„ 3Iodiola capox [Coo\)er, non] Conr. [ = 31. modiolus, hn..^. Not common. Str. 

 de Fuca, Gibbs, Cooper. 



„ 3Iodiola/labellata, Gld. Puget S. and Str. de Fuca, (xi'&is. [ = iTf. ?-eeto, var.] 



„ Lithophayus, sp. ind., like falcatus. [Probably Adula stylina, Cpr.] Rocks 

 near mouth of Umpqua River, Oregon, Dr. Vollum. 

 381. Area yrandis. Coop, [non Brod. and Sby.,= A. multicostata, Sby.]. One sp. 

 living. San Diego, Cassidy. 



ff Maryaritnna maryaritijera, l^e?i, = Alasmodonta falcata, Gld. River Chehalis, 

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

 with eastern U. S. specimens, and those from Newfoundland 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 

 yet found in the Chehalis, the streams running into Puget Sound, and most 

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

 Shnal\^ater Bay. Eaten by the Indians E. of. the Cascade Mountixins.'' 

 J. O. C. 



85 



