60 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXV 
330. Opposite side of mountain from Station 229 (the Ash 
canyon side). 
- 331. Third mountain south of marble quarry in Carr canyon. 
332. Largest mountain west of Dan Mathew’s ranch house in 
the Mustangs; main gulch of north slope. 
333. Next gulch eastward. 
334. Small hill in the pass to Elgin. 
Santa Rita Movuntains.—Late in December, 1917, Rosemont 
and Greaterville, on the eastern slope, were found to be dry col- 
lecting. Miners have removed much of the timber. Living 
Sonorellas were rare, and the dead ones very dead. This is in the 
oak, walnut and sycamore zone. A couple of miles south of Rose- 
mont a crossing was made westward on a spur of porphyry, looking 
down upon Helvetia. Slides were numerous, Jarge and deep. 
Dead Sonorellas of two species were found, and one alive. 
At Greaterville a limestone ridge south of the placer diggings, 
four miles south of the village, was given a hard half-day’s work. 
Mr. Cole, our guide, in his mining days was a superintendent here, 
knew the ridges and led the way. Under large blocks of stone and 
deep in the earth we found a few “‘bones” of Sonorella, but none 
alive. The short list follows: 
Sonorella walkeri aguacalientensis P. & F. Allen Mts., in 
Josephine canyon, Station 206 (1919). 
Sonorella linearis P. & F. Station 49, 50 (1917). 
Sonorella hesterna P. & F. (2). Station 49-52 (1917). 
Thysanophora hornii (Gabb). Station 48 (1917), Rosemont. 
Polita indentata umbilicata (Ckll.). Station 48 (1917), Rosemont. 
Gastrocopta ashmuni (Sterki). Station 48 (1917), Rosemont. 
THE Empire Mountains are small, the highest peak about 
5500 ft., lying in eastern Pima Co. between the Whetstones and 
the northern end of the Santa Rita Range. They are mapped on 
the Patagonia Quadrangle. Camping on this range, across the 
valley from the Santa Ritas, Sonorella and Holospira were located 
in a high peak at the north end of the range, about two miles north 
of the Total Wreck mine. Again they were found in peaks on the 
south side of a branch road to the Forty-Nine mining camp. Also 
north of this road a mile or more, at the foot of a prominent pre- 
cipice. Very few were alive. 
Sonorella binneyit imperialis P. & F. Station 151; a few bones 
at 150. 
Sonorella tryoniana P. & F. Stations 149, 152. 
