1910.] NATURAL SCIENCES OF PHILADELPHIA. 135 
Fresno County, California. It is one of the very few forms common 
to Arizona and the West Coast. 
VALLONIIDA: Pilsbry. 
Vallonia perspectiva Sterki. : 
Summit of Cross J Mountain, Big Emigrant Canyon; Paradise 
Canyon below Paradise; White Tail Canyon; Spring in lower Rucker 
Canyon; Limestone Mountain. 
FERUSSACIDA® Bourguignat. 
Cochlicopa lubrica (Miill.). 
Chiricahua Mountains: Ridge between White Tail Canyon and the 
Pinery, Station 3; Jhu Canyon; Paradise Canyon; Cave Creek Canyon 
at Stations 4, 5 and 11 and 14 F, very scarce; Barfoot Park; head of 
Pine, 7,500 feet; Long Park, 8,000 feet; Box of Rucker Canyon. 
PUPILLIDZA Turton. 
Pupillade Turton, Manual of the Land and Fresh-water Shells of the British 
Islands, p. 97 (1831). 
Pupillide, Pilsbry, Nautilus, XVIII, p. 107 (Jan., 1905). 
Pupide of authors. 
The northern (Canadian) forms of this group approach their southern 
limit in the ranges of Southern Arizona. Vertigo is represented only 
by afew puny forms at high elevations. The Upper Sonoran Bifidariz 
predominate, especially those of the section Immersidens. 
The family name Pupillide replaces Pupide because the generic 
term Pupa was not based upon a member of this family. 
Genus PUPILLA ‘Leach’ Turton. 
Pupilla hebes (Ancey). 
Box in Rucker Canyon; Spring branch of Rucker. The sinistral 
form of P. hebes (which we will call form nefas) was taken in Pine 
Canyon, 7,500 feet (type loc.), and at the head of Cave Creek, Station 
14, at 8,000 feet. No dextral examples were taken at either of these 
stations. 
Genus BIFIDARIA Sterki. 
Bifidaria pellucida hordeacella (Pils.). 
Summit of Cross J Mountain, Big Emigrant Canyon; Paradise 
Canyon below Paradise; White Tail Canyon; Cave Creek Canyon on 
slope below the cave; Shake Gulch, Limestone Mountain. 
Bifidaria quadridentata Sterki. 
Barfoot Park, one specimen. 
