1918.] NATURAL SCIENCES OF PHILADELPHIA. 309 



for about 35 miles, then directly north 16 miles on Eagle Creek to 

 the southern rim of the Blue Mountains. Pupas and Vallonias were 

 found at Honeymoon Ranger Station, and Oreohelix a mile or two 

 farther on, fifty miles from Clifton. 



The rim of the Blue has a wall of broken granite. We found 

 Ashmunella mogollonensis and a grayish form of Oreohelix cooperi, 

 the latter also in the quaking asp and cork-])ark fir groves of the 

 vicinity. 



The route lay northwesterly again, across the K. P. cienoAja, 

 down Corduroy and Fish Creeks and across Black River, to Reser- 

 vation Creek in Apache Co. This high plateau has a continuous 

 forest of the largest yellow pine, blue spruce, Douglas spruce, thickets 

 of quaking asp and alder. Pupaj and Oreohelix were the prin- 

 cipal snails. Few were found on the dome-like summit of Mt. 

 Thomas. 



Along Black river Oreohelices, from pale to nearly black, from high 

 to low, were in every rock pile. 



On the return trip the Raspberry trail from the rim of the Blue 

 Mountain to Cosper's ranch on the Blue river was taken. Down the 

 Blue and San Francisco rivers Ashmunella, Sonorella and Oreohelix 

 were found in the slides investigated, but the journey was a hurried 

 one. This ground was thoroughly covered in the journey of 1914. 



An account of the journey of 1913 may be found in Nautilus for 

 January, 1919. 



On the expedition of 1914, Ferriss was accompanied by Mr. L. E. 

 Daniels.^ Part of the route taken in 1913 was retraced — from 

 Clifton, Graham Co., Arizona, up the San Francisco and Blue 

 Rivers to Cosper's ranch, a distance of about 50 miles. From this 

 point they continued up the Blue River, northeast, to its head, and 

 to Luna, Socorro Co., New Mexico. From Luna the party turned 

 southeast, across the San Francisco Mountains (which lie south of 

 Luna), and by way of Alma to the Mogollon Mountains. Some 

 account of this trip was given in Nautilus XXVIII, February, 1915, 

 pp. 109-113. The Ashmunellas collected were described and figured 

 in Nautilus XXIX, June, July and August, 1915, to which the reader 

 is referred for these matters. A map showing the collecting stations 

 in the Mogollons may be found on page 331. 



5 We have to i-ecord the death of Mr. Daniels, October 23, 1918. He was 

 a companion of both authors on collecting trips of some months' duration, and it 

 is a real sorrow that he will no longer share the labors of the trail or the cheer of 

 the evening camp fire. 



