EfGERsoLi,] ZOOLOGY LIMSLEIDjE. 405 



It occurs also in Hell-Gate River, Montana ( Cooper) ; Cosur d'Alene 

 Lake, Montana (Hemphill) ; Ruby Valley, Nevada (Simpson) ; and along 

 the Yellowstone (Smiths. CataL). Eastern States. 



Gyraulus vermicular is, Gld. — Truckee, Nevada, altitude 5,866 feet, 

 rare ; Dalles, Oregon (Cooper). Santa Cruz northward. 



POMPHOLIGIN^E. 



Pompholyx effiusa, Lea. — Near White Pine, Nevada (Hemphill) ; north- 

 eastern California (Newberry). Sacramento Valley. 



Carinifex Neivberryi, Lea. — Klamath Lake, Oregon (Newberry). Cali- 

 fornia. 



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



AKCYLIN^]. 



? Ancylus parallelus, Hardeman. 



North Park (Barber) 4 specimens. 



Among the shells brought home by Mr. Barber were four apparently 

 full-grown specimens, and one young one, of an Ancylus, 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, perhaps, be noticeable between 

 them. 



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



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



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

 [approaching A. Jcootaniensis] (Hemphill). California. 



Acroloxus Nuttallii, Hald. — Oregon (Nuttall); lower part of Snake 

 River, Washington Territory (Hemphill). California. 



LIMN^ID.^. 

 Limnea stagnalis, Linnjeus. 

 Between the Animas and La Plata 2 specimens. 



Fraser River, typical, fine, and abundant (Lord) ; east of Fort Colville 

 (Northwest Boundary Survey) ; Rhett's Lake, California (Neioberry); Ruby 

 Valley, Nevada, and southern Utah (Simpson). Circumpolar. ' 



Limnea sumassi, Baird. 



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 Rivers (Hay- 

 den); Ruby Valley, Nevada (Simpson). 



limnea ? 



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



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



