514 PROCEEDINGS OF THE ACADEMY OF [Nov., 
Pyramidula (Gonyodiscus) shimeki cockerelli Pils. 
“Reef,” Carr Canyon, at 5,000 feet (C. R. Biederman). 
Radiodiscus millecostatus Pils. and Ferr. 
Carr Canyon; Miller Peak, near the top and on the north side, and 
in Wickersham’s Gulch; Wickersham’s. 
Helicodiscus eigenmanni arizonensis Pils. and Ferr. 
Found in 1904, no special locality recorded. 
ZONITIDA. 
Zonitoides arborea (Say). 
Wickersham’s Rock, Miller Peak; Tanner Canyon; Ash Canyon. 
Zonitoides minuscula (Binn.). 
Wickersham’s, Miller Peak; Tanner Canyon; Benson. 
Zonitoides minuscula alachuana (Dall). 
Ash Canyon; Wickersham’s. 
Zonitoides milium meridionalis Pils. and Ferr. 
Wickersham’s. 
Vitrea indentata umbilicata (Ckll.). 
Tanner Canyon; Wickersham Gulch; Miller Canyon, one very large 
example, diam 6.7 mm.; Ash Canyon. 
Euconulus fulvus alaskensis Pils. 
Wickersham’s rock, Miller Peak. 
Vitrina alaskana Dall. 
Wickersham’s, Miller Peak. 
SUCCINEIDA 
Succinea avara Say. 
Tanner and Ash Canyons. 
VALLONIIDA. 
Vallonia perspeotiva Sterki. 
Tanner, Pine and Ash Canyons; Wickersham’s, Miller Peak. 
Vallonia cyclophorella Ancey. 
Wickersham’s, Miller Peak. 
PUPILLID A." 
Pupilla hebes (Ancey). 
Wickersham’s, Miller Canyon. 
‘0 Pupoides hordacea (Gabb) and Pupilla syngenes (Pils.) were found in rive 
drift at Benson. Of the latter both dextral and sinistral shells, one of each. 
