1918.] NATURAL SCIENCES OF PHILADELPHIA. ' 327 



18, 29 (1914); Little Blue; rim of Blue Mountains, 12,000 ft.; also 

 in Apache Co. on Fish Creek, 10,500 ft. 



New Mexico : Stations 38, 42, 46, 55, Mogollon Mountains. 



Striatura milium meridionalis (P. & F.). 



Arizona: Cosper's pasture, 11,000 ft., Graham Co.; Black River 

 and Reservation Creek, 9,500 ft., Apache Co. 



New Mexico: Station 57, south fork of Whitewater Creek, 

 ]\Iogollon Mountains. 



Zonitoides arborea (Say). 



Arizona: Station 29, Blue River; Cosper's pasture and rim of the 

 Blue Mountains, Graham Co.; Reservation Creek and Fish Creek, 

 Apache Co. Up to 12,000 ft. 



New Mexico: Stations 38, 42, 46, 50, in the Mogollon Mountains. 



Zonitoides minuscula alachuana (Dall). 



Arizona: Graham Mountain, Graham Co.; Station 6, foot of 

 Copper King Mountain. Reservation Creek, Apache Co. 

 New Mexico: Big Dry Creek, Mogollon Mountains. 



Zonitoides singleyana (Pils.). 



Arizona: Station 6 (1914), foot of Copper King Mountain, 1 mile 

 below Harper's, Graham Co. 



Euconulus fulvus (Miill.). 



Arizona: Station 58, Cosper's pasture, 59, rim of Blue Mountains, 

 Graham Co.; Reservation Creek and Station 75, White Mountain 

 Camp, 13,500 ft. 



New Mexico: Stations 38, 42, 45, 46, 47, 50, 53, in the Mogollon 



Mountains. 



VITRINID^. 

 Vitrina alaskana Dall. 



Arizona: Rim of Blue Mountains, 12,000 ft., Graham Co.; Res- 

 ervation Creek, Apache Co., 9,000 ft. 



New Mexico : Stations 45, 46, Willow Creek, Mogollon Mountains. 



VALLONIIDJE. 

 Vallonia perspectiva Sterki. 



Arizona: Graham Mountains; Cosper's ranch of the Blue River, 

 5,060 ft. ; Ole Hagen's ranch on Eagle Creek. Abundant. 



New Mexico: Station 38, Silver Creek above Mogollon, and 57, 

 south branch Whitewater Creek; also Big Dry Creek, Mogollon 

 Mountains. 



Vallonia cyclophorella Ckll. 



Arizona: Cosper's pasture and rim of Blue Mountains, Graham 

 Co.; Reservation Creek, Apache Co. 9,500 to 12,000 ft. 



