KGERSULL.] ZOOLOGY LIMN^ID^. 405 



It occurs also in Hell-Gate Eiver, Montana (Cooper) ; Cceur d'Aleno 

 Lake, Montana {Hemjjhill) ; Eiiby Valley, llsTevada {Simpson) ; and along 

 the Yellowstone (Smiths. CataL). Eastern States. 



Gyraulus vermictdiiHs, Gld. — Truckee, ]!:*3'evada, altitude 5,866 feet, 

 rare 5 Dalles, Oregon {Cooper). Santa Oruz northward. 



POMPHOLIGIN^. 



Pompliolyx effasa, Lea. — Near White Pine, ISTevada {Rcmphill) ; north- 

 eastern California {Newberry). Sacramento Valley. 



Carinifex Neicberryi, Lea. — Klamath Lake, Oregon {Newberry). Cali- 

 fornia. 



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



AlfCYLIN^. 



? Ancylns parallelus, Haldeman. 



North Park {Barber) 4 specimens. 



Among the shells brought home by Mr. Barber were four ax:)parently 

 full-grown specimens, and one young one, of an Ancyhis, none of "which, 

 contained the animal. While closely resembling the figure of A. cau- 

 rinus, Cooper, given on page 144 of Part II, of Binney and Bland's 

 Land and Fresh- Water Shells of North America, careful comparison 

 ■with the large series in the Museum of Comparative Zoology failed to 

 establish any great difference between them and A. parallelus. As, 

 however, this latter species has not been found hitherto, out of New 

 England, it seems only proper to look upon the apparent identity of 

 the Colorado and eastern shells, with caution. A slight difference in 

 the angle of the sides en profile may, perhax)s, be noticeable between 

 them. 



Ancylus Newberryi, Lea. — Klamath Lake, Oregon {Newberry). 



Ancylus Icootaniensis, Baird. — Elvers Kootanie and Spokane (Lord). 



Ancylus patelloides, Lea. — Spokane Eiver, Washington Territory, 

 [approaching A. Icootaniensis] {Hemphill). California. 



Acroloxus NuttaUii, Hald. — Oregon {Nuttall); lower part of Snake 

 Eiver, Washington Territory {EetnpMll). California. 



LIMN^ID^. 

 Limnea stagnaUs, Linn^us. 

 Between the Animas and La Plata , 2 specimens. 



Eraser Eiver, typical, fine, and abundant {Lord) ; east of Fort Colville 

 {Northwest Boundary Survey) ; Ehett's Lake, California {Netvberry); Euby 

 Valley, Nevada, and southern Utah {Simpson). Circumxjolar. 



Limnea snmassi, Bated. 

 Between the Animas and La Plata 1 specimen. 



East of Fort Colville, Washington Territory {Northwest Boundary 

 , Survey)] Snmass Prairie {Lord). 



Limnea Haydeni, W. G. B. — Yellowstone and Big Sioux Eivers {Say- 

 den) ; Euby Valley, Nevada {Simpson). 



Limnea ? 



Camp 30 : Eio Grande, above del Norte 50 specimens, 



Eematzks. — "Near L. liowellii, Try on." — Dr. Jas. Lewis, in letter. 



