ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 673 



SuLfam. Succinitue. 



t57. Sueeitua* (Stieeinea) Hawkinsi, Baird. British Columbia, Lord. 

 t->*<. Stwcinea (Siwcinea) cinyuhta, F'os. Mazatlan, KAlett and Woud. 

 51). Succinea (Succinea) rusficana, (Hi. Ohkoon and Califohnia : — Oregon, 



(7. S. E. E.; Ocogo Creek, California, William.v>n. 

 (K). Suecinea (Succinea) Nttttalliana, Lea. " Scarcely ditiera from S.ovnlis, Hudson 

 River," Gld. Oregon and California : — Lewis's River, Or., Nuttall ; In- 

 terior of Ore^., U. S. E. E.; Wrij?ht'8 Lake, Ilhell's Lake, Cal., Xeicbern/. 

 Qi, Succinea (Succinea) Oreffoneiisui, hea. "lip9enMeaS.aHrea,"(ild. Oukgon 

 AND California : — Oregon, Nuttall. San Francisco, Rou:eU. 



Subfam. Limacina. 

 C2. Limax X (Amalia) Colnmbiamis, Gld. Piokt SorxD to San Francisco : — 

 I'liget Sound, f/. S. E. E., Dyes ; Oregon City and Cape Flatten,-, Wil- 

 Uamaon ; San Francisco and Port 0.xford, Trowbi-idye ; Nisqually, Case. 



Fam. Arionidte. 

 Subfam. ArionintP. 



63. Arion (Lochea) foliolatus, Gld. Puget Sound, U. S. E. E., Pickering. 



Subfam. Zmitiixp. 



64. Zonites § (uE(jopis) culteUata, Thoms. " Closely resembles the Dalmatian H. 



albanica and acies." Contra Costa Co., Cal., common, Thomson. 



Fam. Onchidiada. 



65. Onchidium Carpentcri, Binn. Cape St. Lucas, Xantus. 



Limnophila. Fam. Auriculid<e. 

 Subfam. Melampina. 



66. Melampvs ohvaceia, Cpr. San Dieqo to Mazatlan : — ^fazatlan, Betgen ; 



San Diprro, Blake, Cooper. 



67. Pedipex lirata, Binn. Lower California : — C. S. Lucas, Xantus ; San Diego, 



Cooper. 



Fam. Limn(pid<e. 



Subfam. Limnennce. 



68. Limn(pa (Limntea) stagnalis, hmn., + L. jugularis, Sav, Hala , De Kay, Kiist., 



Binn. (lstlist),4-i. rt/)/>res«a, Say, IIald.,De Kay, Kuat., C. B. Ad.. + -£. »}>e- 

 ciosa, Ziegl. Europe, Asia, America : — RhettLake, California, Newberry ; 

 Ruby Valley and S. Utah, Captain Sitnpson. Fort Simpson and Hudson's 

 Bay, common; throuirhout British America and northern tier of U. S., 

 from Vermont to Pacific, teste Binn. [Var.=/r. frayilis, Linn., teste 

 Hani., Ips. Linn. Conch, p. .385 ; non Rve., Binn. (1st list)/) 



6n. Limneea (LinvuBa) lejiida, CJld. Lake Vancouver, U. S. E. E. 



70. LimncBa (Limnojihysa) rtfli'xa, Say, Hald., De Kav, Kiist., +Z. elongaia, Say, 

 Z. umbrosa, Say, Hald., De Kay, Kiist., +Z. e.nlis+L. Haydeni, Lea. San 

 Francisco, Powell. Also throuf^h British America and northern tier of 

 States from New York to Pacific ; teste Binn. 

 +71. Limneea (Limnophysa) Sumassii, Baird ||. 



* So great is the difficulty of ascertaining (even approximately) the specific relations of 

 Siiccinem without a comparison at least of single specimens, that Mr. Binney considers it 

 safest, until series have been examined, simply to quote the species which have been de- 

 scribed by other authors. He has followed the same course with Ancylus, and for the 

 same reason. 



X " Has a pore. Why not Arion ? " — Binney, in MS. hst. 



§ This appears among " doubtful species " in the MS., but is printed in the text of 

 the Clieck-List. 



II Probably a variety of ^a?tts/n.?=iVK?i'a//(a»a, Lea. British authors hare ns yet bad 

 but poor opportunities of studying typieallv-nained American freshwater Pulmonatis, 



1863. j^'g 



