598 REPORT— 1863. 



8 73. Cdlumhella gausapata, Gld. Str. de Fuca, Sucldey, 



„ Columbella valga [Cooper, non] Gld. [_=Succinum corrugatum, Eve.] StT. 

 de Fuca, Sucldey. ■ 



„ Natica Lewisii, Gld.,=iV! heradea, Midd. Puget Soimd, J. G. Cooper, Suck- 

 ley. "Shell sometimes remarkably globose, fiometimes with spire mucli 

 produced." W. C. "Abundant throughout the N.W. sounds, and col- 

 lected in great numbers by the Indians for food. In summer it Cray Is 

 above high-water mark to ileposit its eggs " in the well-known sand-coils, 

 which are "beautifully symmetrical, smooth, and perfect on both sides." — 

 J.O.C. 



„ Potamis puUatus, G]d. A variable species. TJ. Cal., Trask. 

 874. Melania pKcifera, Lea. Very common in rivers, W. T., /. G. Coopir, 



„ Melania silicula, Gld. [ = one of the many vai's. of 31. plicifera, teste Lea]. 

 In rivers, W. T., Nisqually and Oregon, J. G. Cooper. 



„ Melania Shortaensis, Lea, MS. \_=Shastaensis, Lea]. Willopah River, J. O, 

 Cooper. 



„ Amnicula Nuttalliana, Lea, Phil. Trans, pi. 26. f. 89. Columbia River, J. G. 

 Cooper. 



„ Amnicola seminalis, Hds. U. Cal., Trash. [Belongs to Dr. Stimpson's new 

 genus, Flummicola.'] 



„ Turritella JEschrichtii, Midd. [_=Bittiuin, filosum, Gld.]. Puget Soimd, Sucl:i- 

 ley, Gibbs. 



„ " Litorina rudis, Gld., Stn." [Cooper, non Mont.]. Shoalwater Bay, De 

 Fuca, J^ G. Cooper, Suckley, Gibbs. " Very abundant on the N.W. coast, 

 where it presents the same varied appearances as our eastern shell." — ir. C. 

 [To an English eye, it appears quite distinct, i. rudis, Coop., with sub- 

 tenebrosa, Midd., and modesta, Phil., are probably vais. oi L. Siikana, Phil., 

 =Ii. sulcata, Gld.] 



„ Litorina scutulata, Gld. On rocks, from the head of Puget Sound to De Fuca, 

 J. G. Cooper. 



„ Litorina 2>lanaxis, Nutt. [=L. patula, Gld.]. San Luis Obispo, Dr. Antisell. 



375. TrchusfilosMs, Wood,= 2'. ligatus, Gld., = 2! modestus, Midd. Str. de Fuca, 



J. <i. Cooper; U. Cal., Trash. I'^T. costatus. Mart.] 

 „ Irochus Schantaricus [Coop., non] Midd. [=Marg. pupilla, Gld.,=ilf. calo- 



stoma, A. Ad.] Str. de Fuca, J. G. Cooper, abundant. 

 „ Haliotis Kamtschathana, Jonas. Nootka Sound, Capt. Itussell, teste Tiask. 

 „ Haliotis corrugata. San Diego, Cassidy. 

 „ Haliotis splendens. San Diego, Cassidy. 

 „ Haliotis rufescens. San Diego, Cassidy. 



„ Haliotis Cracherodii. (None of the rare var. Californiensis.) S. Diego, Cassidy. 

 „ Fissurella nigropunctata, Sby. Two specimens sent by Dr. Trask as coming 



from Catalina Is., U. Cal. [Pimported]. 

 „ Fissurella aspera,^acb..,? = cratitia, Gli., ? = densiclathrata, Rve. \_=Lincolni, 



Gray. This is certainly Gould's species from type ; but Reeve's shell ia 



southern, and appears distinct.] U. Cal., Lieut. Trotobridge. 



376. Nacella instabilis. 



The few shells collected of this family are mostly imper- 

 fect, but appeal' to belong to the species quoted : for 

 the synonymy of which, reference ia made to the Bri- 

 tish Association Report. 



Acmcea pelta. 



Acmaa persona. 



Acmcea spectrum. 



Ac mesa scabra. 



Acmcea ceruginosa. 



Scurria mitra. 



Cliiton muscosus. 1 Still fewer materials, among which the quoted species 



diiton submarmoreus. I were identified. [The " submarmoreits," both of 



Chiton tunicatus. C Midd. and Coop., may prove to be Tonicia lineata, 



Chiton lignosus. ) var.] Chiefly from Oregon. 



Helix fidelis, Qra.j,= Nuttalliana, Lea. Forests W. of Cascade Mountain. 



W. T., /. G. Cooper. ' 



Helix lownse7idiana, Lea. '"Common in open prairies near the sea, but not 



near Puget Sound," W. T., J. G. Cooper. 



84 



