ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 673 



Subfam. SucciniiKe. 



t57. Succii^a * (Succtnea) Ilaivkinsi, Baird. British Columbia, Lord. 

 to8. Succinea (Sitccinea) cingidata, Fbs. Mazatlan, Kellett and Wood. 



59. Succinea (Succinea) rusticana, Gld. Oregon and Califorxia : — Oregon, 



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



60. Succinea (Succinea) Nuttalliana, Lea. "Scarcely differs from S.ovalis, Hudson 



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

 terior of Oreg., JJ. S. E. E.; Wright's Lake, Rhell's Lake, Cal., Kewhernj. 

 G3. Succinea (Succinea) Oreffonensis, Liea. ^' liesemhles S. aurea,^' Gld. Oregon 

 AND California : — Oregon, Nuttall. San Francisco, Howell. 



Subfam. Limacince. 

 02. Limax J (Amalia) Columbianus, 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, Troivbridye ; Nisq[ually, Case. 



Fam. Arionidce. 

 Subfam. Arionince. 



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



Subfam. ZonittKe. 



64. Zonites § (JEr/opis) cidtellata, Thorns. " Closely resembles the Dalmatian H. 



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



Fam. Onehidiadce. 



65. Onchidium Carpenteri, Binn. Cape St. Lucas, Xanttts. 



Limnophila. Fam. Auricididce. 

 Subfam. Melami)ince. 



66. Melamptfs olivaceus, Cpr. San Diego to Mazatlan : — Mazatlan, Beigen ; 



Sail Diego, Blake, Cooper. 



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



Cooper. 



Fam. Limnmdce. 



Subfam. Limnceince. 



68. Limncea (Limneea) stagnalts,'Lmn.,+L. Juf/tdaris, Say, Hald., De Kay, Kiist., 



Binn. (1st list),4--£- appressa, Say, Hald., De Kay, Kiist., C. B. Ad.. + i. spe- 

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

 Ruby ^"alley and S. LUah, Captain Simpson. Fort Simpson and Hudson's 

 Bay, common ; throughout British America and northern tier of IT. S., 

 from Vermont to Pacific, teste Binn. \y&v.=H. fragilis, Linn., -teste 

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



69. LimncBa (Limneea) lepida, Gld. Lake Vancouver, U. S. E. E. 



70. Limneea (Limnophysa) r<Jlexa, Say, Hald., De Kay, Kiist., -|-Z. elongata, Say, 



L. umhrosa, Say, Hald., De Kay, Kiist., +i. e.vilis+L. Hagdeni, Lea. San 

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

 States from New York to Pacific ; teste Binn. 

 t^l- Limneea (Limnophysa) Sumassii, Baird ||. 



* So great is the difBculty of aseertainiiig (even approximately) the specific relations of 

 Succineee 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 tlie 

 same reason. 



X " 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. 



II Probably a ysirieij of pah(stris= Nutfalliana, Lea. British autliors have as yet had 

 but poor opportunities of studying tvpically-named American Ireshwater Pulmonatif, 



1S03, • j.g 



