ON MOLLTJSCA OP THE WEST COAST OF NOUTII A:M ERICA. 599 



Page. 



376. Htlix Columbiana, 'Lea,=labiosa, Gld. "In wet meadows from Vancouver 

 to tlie coast, not near Puget Sound," W. T., J. G. Cuoper. 



577. Helix Vancouverensis, ljes,\-\- sportella, Gld., teste Bland]. "West of Cas- 



cade Mountain; most abundant under alder-groves; also on Whidby's 

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



„ IZelif devia, Grldi.,=:liaslcervillei, Pfi'. Two sp. in damp woods, near Van- 

 couver, W. T., J. G. Cooper. 



„ IIcUx 'tudicidata, Binn. Rare, with the last, Vancouver ; also Washington 

 '' Territory, J. G. Cooper. 



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



„ Limax Columhianus, Gld. " Abundant in dense, damp spruce-forests, near 

 Pacific coast ; gTows to 6 inches, and is smooth, not rugose, when living,'' 

 J. G. Cooper. 



578. Limnaa umbrosa, Gld. Lake Oyosa, Okanagan River, J. G. Cocyper. 



„ Limncea emarginata, Say. Lake Oyosa, Okanagan River, J. G. Cooper, 



„ Limnaa jugularis, Say. Lake Oyosa, Okanagan River, /. G. Cooper. 



„ Physa elongata, Say. Near Puget Sound, J. G. Cooper. 



„ Physa heterostropha, Say. Ponds in W. T., J. G. Cooper. 



„ Pliysa hullata, Gld. MS. Lake Oyosa, W. T., /. G. Cooper. 



„ Ancylus caurinus, Coop., ?n. s. \"?=A. NuttalU, Hald.," Coop. MS.] Black 



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

 „ Planorbis corpidentus, Say. Lake Oyosa, W. T., J. G. Cooper. 

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

 couver, W. T., J. G. Cooper. 

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

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

 379. Sulla nebulosa, Gld. Bay of S. Pedro, Trash. 

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



Suckley. \? = Haminea hydatis.'\ 

 f, Ostrea edulis, Coop, [non Linn. : = O. lurida, Cpr.]. De Fuca and Puget 

 Sound, Gibbs ; Shoalwater Bay, Cooper. " 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." 

 „ \_Plncun\anomia macroschisma, Desh. De Fuca, Gibbs ; Nootka Sound, Capt. 



Russell. 

 „ Peoten caurinus, Gld. De Fuca, Suchley. One of the specimens measures 

 23 inches in circumference and 8 in. across. > 



830. Pccten t^entricosus, Shy.,-\-tumidus, Sby. [= Pvar. cequisulcatus, Cpr.]. Upper 

 Cal., Trask \ San Diego, Cassidy. 

 f, Mytilus edulis, Ln. Shoalwater Bay, Cooper. "As abundant as in Europe 

 and N. Enr^land, with the same variations, and when eaten occasionally 

 causing urticaria." — J. G. Cooper. 

 „ Mytilus Cahfornianus, Conr. Puget Sound, Port Townsend, Suchley, Gibbs ; 



Upper Cal., Trash. One specimen is 9J- inches long. 

 „ Modiola capaxlCoo-^ev, mm] Com. \_ = M. modiolus, Tjr.']. Not common. Str. 



de Fuca, Gibbs, Cooper. 

 „ Modiola fiabellata, Gld. Paget S. and Str. de Fuca, Gibbs. \^— Sf. recta, Ya.v.'] 

 „ Lithophagus, sp. ind., like falcatus. [Probably Adiila stylina, Cpr.] Rocks 

 near mouth of Umpqua S,iver, Oregon, Dr. Vollum. 

 331. Area grandis, Coop, [non Brod. and Sby.,= A. midticostata, Sby.]. One sp. 

 living. San Diego, Cassidy. 

 ff Margaritana margaritifera, ljea,, = Alasmodonta falcata, Gld. River Chehalis, 

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

 with eastern U. S. specimens, and those from Newfoundland and Em'ope, 

 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 fomid in the Chehalis, the streams running into Puget Sound, and most 

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

 Shoalwater Bay. Eaten by the Indians E. of the Cascade Mountains,'' 



J. a.c. 



85 



