ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 673 



Subfam. Succinince. 



t57. Succinct * (Succinea) Haivkinsi, Baird. British Columbia, Lord. 

 t-58. Succinea (Succinea) cingulata, Fbs. Mazatlan, Kellett and Wood. 

 50. Succinea (Succinea} rusticana, Gld. OREGON AND CALIFORNIA: Oregon, 



U. S. E. 22.; Ocogo Creek, California, Williamson. 



6C. Sutri-nea (Succinea) Nuttalliana, Lea. "Scarcely differs from S. ovalis, Hudson 

 River," Gld. OREGON AND CALIFORNIA : Lewis's River, Or., Nuttall ; In- 

 terior of Oreg., U. S. E. E. ; Wright's Lake, Rhell's Lake, Cal., Newberry. 

 GJ . Succinea (Succinea) Oregonensis, Lea. " Resembles S. aurea" Gld. OREGON 

 AND CALIFORNIA : Oregon, Nuttall. San Francisco, Rowell. 



Subfam. Limacince. 



62. Limax \ (Amalid) Cohimbiamts, Gld. PUGET SOUND TO SAN FRANCISCO : 



Puget Sound, U. S. E. E., Dyes ; Oregon City and Cape Flattery, Wil- 

 liamson ; San Francisco and Port Oxford, Troiubridge ; Nisqually, Case. 



Fam. Arionidce. 

 Subfam. Arionince. 



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



Subfam. Zcnitiuce. 



64. Zonites (JEgopis) cultettata, Thorns. " Closely resembles the Dalmatian H. 



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



Fam. Onchidiadce. 



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



LIMNOPHILA. Fam. Auricididce. 

 Subfam. Melampincs. 



66. Melampus olivaceus, Cpr. SAN DIEGO TO MAZATLAN : Mazatlan, Reigen ; 



San Diego, Blake, Cooper. 



67. Pedipes lirata, Binn. LOWER CALIFORNIA : C. S. Lucas, Xantus j San Diego, 



Cooper. 



Fam. Liinnceidce. 



Subfam. Limnceince. 



68. Limncea (Limnced) stagnalis, Linn.,+i. Jugularis, Say, Hald., De Kay, Kiist., 



Binn. (1st list), +L. appressa, Say, Hald., De Kay, Kiist., C. B. Ad., + i. spe- 

 ciosa, Ziegl. EUROPE, ASIA, AMERIC A : RhettLake, California, Newberry ; 

 Ruby Valley and S. Utah, Captain Simpson. Fort Simpson and Hudson'8 

 Bay, common j throughout British America and northern tier of TJ. S., 

 from Vermont to Pacific, teste Binn. [Var.=lT. fragilis, Linn., teste 

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



69. Limn&a (Limncea) lepida, Gld. Lake Vancouver, U. S. E. E. 



70. Limncea (Limnophysa) reflexa, Say, Hald., De Kay, Kiist., 4- L. elongata, Say, 



L. umbrosa, Say, Hald., De Kay, Kiist., -\-L. exilis+L. Haydeni, Lea. San 

 Francisco, Rowell. Also through British America and northern tier of 

 States from New York to Pacific ; teste Binn. 

 f71. Limncea (Limnophysa) Sumasm, Baird ||. 



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

 Succinece 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. 



t " Has a pore. Why not Arion ? " Binney, in MS. list. 



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

 the Check-List. 



j| Probably a variety of palustHs= Nultalliana, Lea. British authors have as yet had 

 but poor opportunities of studying tjpicallj-named American Ireshwater Pulmonate?, 



159 



