308 PROCEEDINGS OF THE ACADEMY OF [NoV.-DeC, 



31. Slide west across gulch from smelter, Copper Creek. 



32. On trail to Table Mountain about half way from last station. 



33. West of abandoned copper camp, creek running north, east of Table 

 Mountain, in slide east of said creek. 



34. Slides in same vicinity. 



35. Cliffs, northeast rim of Table Mountain. 



(Western slope of Santa Catalina Range.) 



36. East side of Pima Canyon. 



37. West side of Pima Canyon. 

 3S. Drift debris of Pima Canyon. 



39. Fork of the Canada del Oro near the foot of Marble Peak. 



43. Northeast of Sutherland's ranch, in the foothills. 



44. First large canyon north of Romero Canyon, and south of the Suther- 

 land ranch. 



45. About one mile east of Station 44. 



(Tortillita Mountains.) 



40. West side of Hog Canyon, in basin near cement dam, 



41. East side of Hog Canyon, on the mountain top. 



X — Mountains of the Gila Headwaters: The Blue and 

 White Mountains, Arizona, and the Mogollon Mountains, 

 New Mexico. 



The malacological survey of these ranges, which lie in Graham, 

 Apache and Greenlee counties, Arizona, and Socorro count}^, New 

 Mexico, was begun by one of us (Ferriss) in 1913, and continued 

 by Ferriss and L. E. Daniels in 1914. In 1900 Dr. E. O. Wooten, 

 well known for his work on New Mexican botany, made a ten-day 

 trip in the Mogollons, in course of which he crossed the range from 

 Willow Creek to Mogollon and ascended the eastern flank of Mogollon 

 Peak to almost 9,000 feet. The type of Ashmunella mogoUoneiisis was 

 collected on this occasion. So far as we know, no other mollusks had 

 been taken in the region of the Gila headwaters prior to the collec- 

 tions here described. 



A few mollusks collected between the San Pedro River and Clif- 

 ton, Arizona, are included, as they are geographically intermediate 

 between the regions considered in articles IX and X. 



Early in September, 1913, Ferriss left Tucson with Frank Cole, 

 the guide of tourists and naturalists, for Mt. Thomas in southern 

 Apache county, 11,496 feet above sea level. Travehng by wagon, 

 brief stops were made in the Graham Mountains and upper end of the 

 Peloncillo range. At Clifton the wagon was stored, saddle horses 

 and pack mules secured, and the trail followed to Metcalf. 



From Clifton to the Double Circle ranch on Eagle Creek it is 

 rough country, mostly forested, and with sufficient rock for snail 

 cover, but the snails do not like it. The trail here ran northwesterly 



