ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 673 
Subfam. Suceinine. 
757. Succinea* (Succinea) Hawkinsi, Baird. British Columbia, Lord. 
758. Succinea (Succinea) cingulata, Fbs. Mazatlan, Kellett and Wood. 
59. Succinea (Succinea) rusticana, Gld. Orreon anp CaLrrornr :—Oregon, 
U.S. L. E.; Ocogo Creek, California, Williamson, 
60. Succinea (Succinea) Nuttalliana, Lea. “Scarcely differs from S. ovalis, Hudson 
River,” Gld. Oregon anp Catirornta:—Lewis’s River, Or., Metall ; In- 
terior of Oreg., U. 8. E. E.; Wright’s Lake, Rhell’s Lake, Cal., Newberry. 
61. Succinea (Succinea) Oregonensis, Lea.  Resembles S. aurea,” Gld, OREGON 
AND CALIFORNIA :—Oregon, Nuttall. San Francisco, Rowell. 
Subfam. Zimacine. 
62. Limax t (Amalia) Columbianus,Gld. Puaer Sounp To San Francisco :— 
Puget Sound, U. S. #. £., Dyes; Oregon City and Cape Flattery, Wil- 
liamson ; San Francisco and Port Oxford, Trowbridge ; Nisqually, Case. 
Fam. Arionide. 
Subtam. Arionine, 
63, Arion (Lochea) foliolatus, Gld. Puget Sound, U, 8. E. E., Pickering. 
Subfam. Zonitine. 
64, Zonites § (Afyopis) cultellata, Thoms. “ Closely resembles the Dalmatian H. 
albanica and acies,” Contra Costa Co., Cal., common, Thomson. 
Fam. Onchidiade. 
65. Onchidium Carpenteri, Binn, Cape St. Lucas, Xantus. 
Limynopuinta. Fam. Auwriculide. 
Subfam. Melampine. 
66. Melampus olivaceus, Cpr. SAN DmaGo to MazaTLan :—Mazatlan, Reigen ; 
San Diego, Blake, Cooper. ; 
67. Pedipes lirata, Binn. Lowrr Catirornia:—C. 8S. Lucas, Xantus ; San Diego, 
Cooper, 
Fam. Limneide. 
Subfam. Limneine. 
68. Limnea (Limnea) stagnalis, Linn.,+ L. jugularis, Say, Hald., De Kay, Kiist., 
Binn. (1st list),+Z. appressa, Say, Hald., De Kay, Kiist., C. B. Ad.,+ Z. spe- 
ciosa, Zieg]. Kuropr, Asta, AMERICA :—Rhett Lake, California, Newberry ; 
Ruby Valley and S. Utah, Captain Simpson. Fort Simpson and Hudson’s 
Bay, common; throughout British America and northern tier of U. S., 
from Vermont to Pacific, teste Binn. [Var.=H. fragilis, Linn., teste 
Hanl., Ips. Linn. Conch. p. 385; non Rve., Binn. (1st list). ] 
69. Limnea (Limnea) lepida, Gld. Lake Vancouver, U. S. E. £. 
70. Limnea (Limnophysa) refleca, Say, Hald., De Kay, Kiist.,4 LZ. elongata, Say, 
LL. umbrosa, Say, Hald., De Kay, Kiist.,4+ Z. evilis+L. Haydeni, Lea. San 
Francisco, Rowell. Also through British America and northern tier of 
States from New York to Pacific; teste Binn. 
+71. Limnea (Limnophysa) Sumassit, Baird ||. 
* So great is the difficulty of ascertaining (even approximately) the specific relations of 
Succinee 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. : 
{ “Hasa 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. 
|| Probably a variety of palustris=Nuttalliana, Lea. British authors have as yet had 
but ae opportunities of studying typically-named American freshwater Pulmonates, 
. 2x 
