138 



ANCYLIN^. 



Vorticifex Tryoni, Meek. — Fossil in Tertiaries of Nevada (King). 



Ancylus Neivherryi, Lea. — Klamath Lake, Oregon {Wewherry). 



Ancylus Tcootajiiensis, Baird. — Rivers Kootanie and Spokane (Lord). 



Ancylus patelloides, Lea. — Spokane Eiver, Washington Territory 

 [approaching A. Iwotaniensis] {ILem])Mll). 



Acroloxus Nuttallii, Hald.^^— Oregon {Mittall) ; lower part of Snake 

 Eiver, Washington Territory {Hemphill). 



LIMN.EID.E. 



Limnea stagnalis, LinnvEUS. 



Between the Animas and La Plata 2 specimens. 



Fraser River, typical, fine, and abnndant {Lord) ; east of Fort Col- 

 ville {NortJncest Boundary Survey); Rhett's Lake, ('alifornia {Kewherry) ;. 

 Ruby Valley, and Southern Utah {Simpson). Circum polar. 



Limnea sumassi, Baird. 

 Between the Animas and La Plata 1 specimen. 



East of Fort Oolville, Washington Territory {Northwest Boundary 

 Survey) ; Sumass Prairie {Lord). 



Limnea Saydeni, W. G. B. — Yellowstone and Big Sionx Rivers {Ray- 

 den); Ruby Valley, Utah {Simpson). 



Limnea ? 



Camp 30 : Rio Grande, above Del Norte 50 specimens. 



Remarks.—" Near L. Eowellii, Tryon."— Dr. Jas. Lewis, in letter. 



Limnea palnstris, Muller. 



Between the Animas and La Plata 2 specimens. 



Colnmbia River {Nuttall) ; Klamath Lake and Sumner Lake, Oregon ; 

 Rhett's Lake and Wright's Lake, California (Fe^o'&errj/); Hell-Gate River 

 and Missouri River above Falls {Cooper). 



Limnea Nuttalliana, Lea. 



Between Animas and La Plata Rivers 75 specimens. 



Remarks. — Often considered a synoinym of L.palustris, with which, in 

 the West, it seems to be co-extensive. 



Limnea 1 



Colorado 5 specimens. 



Remarks. — "An umbilicate species, for which I find no name." — Dr. 

 Jas. Lewis, in letter. 



Limnea desidiosa, Say. 



Camp 9 : Hot Sulphur Springs 10 specimens. 



Camp 11 : Blue River Valley 10 specimens. 



Lake Osoyoos, Washington Territory {Lord) ; Missouri River above 

 the Falls {Cooper) ; Yellowstone River {Hayden). 



