302 PROCEEDINGS OF THE ACADEMY OF [Nov.—Dec., 
Punctum californicum Pils. 
Santa Catalina Mountains: trail from Webber’s to Lemon Moun- 
tain. 
VITRINID A. 
Vitrina alaskana Dall. 
Santa Catalina Mountains: Station 37, north side of Mt. Lemon 
9,000 ft.; trail to Webber’s place. 
ZONITIDA. 
Polita indentata umbilicata (Ckll.). 
Santa Catalina Mountains: Station A, Bear Wallow Creek. 
West side Mt. Lemon at Station C. Marble Peak at Stations 25 
and 26, 8,000-8,500 ft. Trail from Webber’s place to Mt. Lemon. 
Alder Spring. Rincon Mountains at Station 21 (1917), Catalina 
Saddle, and Spud Rock. Galiuro Mountains, Station 24. 
Striatura milium meridionalis (P. & F.). 
Santa Catalina Mountains: Station A, Bear Wallow Creek; 
Soldier’s Camp; Station 21, Desert Laboratory plantation, 8,500 ft.; 
Mt. Lemon at Stations 22, 28, 31, 37, at 9,000 to 9,500 ft.; trail to 
Webber’s Cabin; Alder Spring. ; 
Zonitoides arborea (Say). 
Santa Catalina Mountains: Station 21, Desert Laboratory 
plantation, 8,500 ft. Soldier Camp. Stations 19, 22,37 0n Mt. Lemon, 
at about 9,000 ft. Station 25, northwest ridge of Marble Peak, 
8,500 ft. Rincon Mountains, Station 20 (1917). 
Zonitoides minuscula alachuana (Dall). 
Santa Catalina Mountains: Mt. Lemon, Bear Wallow; Kellogg 
Peak and Alder Spring. Rincon Mountains. 
Zonitoides singleyana (Pils.). 
Rincon Mountains. 
Euconulus fulvus (Mull.). 
Santa Catalina Mountains: Alder Springs. Soldier Camp. Sta- 
tion 27, Bear Wallow Creek. Mt. Lemon at Station C, 19, 22, 28, 30, 
31, 34. Common up to 9,500 ft. Ridge from Marble Peak, south- 
west, 8,500 ft.; south side of Marble Peak. Rincon Mountains. 
VALLONIIDA. 
Vallonia cyclophorella Ckll. 
Santa Catalina Mountains: Mt. Lemon at Stations 19, 22, 30, 
31, 37, at about 9,000-9,500 ft. Marble Peak, quartzite slide on 
south side, 8,000 ft. 
