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1918.] NATURAL SCIENCES OF PHILADELPHIA. 319 
binneyi P. & F., of the southern Chiricahuas. The blunt penis- 
papilla, and especially the insertion of the penial retractor on the 
epiphallus some distance beyond the apex of the penis, are alike in 
both. There are, however, some differences in the proportions of 
the organs, the epiphallus and penis-papilla being longer relative 
to the penis in S. b. franciscana, and the last whorl of franciscana is 
a little wider, viewed from above. 
The diameter, in specimens seen, is from 17 to 19.3 mm. 
Ashmunella pilsbryana Ferriss. 
Ashmunella pilsbryana Ferriss, Nautilus XXVII, 1914, p. 109. 
Ashmunella pilsbryana Ferriss & Pilsbry, Nautilus XXTX, 1915, p. 42, pl.2, fig. 3. 
Arizona: Along the San Francisco River, from near Harper's 
Ranch to 2 miles above the mouth of the Blue River, Graham and 
Greenlee Counties, Arizona. 
Ashmunella mogollonensis (Pils.). 
Ashmunella chiricahuana mogollonensis Pilsbry, Proc. A. N.S. Phila., 1905, 
p. 252, pl. 16, figs. 101,102. 
Ashmunella mogolionensis Prrspry, Nautilus XXIX, 1915, p. 42. Pinspry & 
Ferriss, Proc. A. N. S. Phila., 1917, p. 93, pl. 7, fig. 10 (shell), and pl. 10, 
fig. 3 (genitalia). 
Professor E. O. Wooten, who discovered this snail, crossed the 
Mogollon Range from Willow to Silver Creeks, along what is now 
called the Bursam road. He also made an excursion from the West 
Fork of the Gila towards Mogollon Peak, reaching a point about 
14 miles due east of the Peak, in the forks of Whitewater Creek, at 
about 9,000 ft. It was probably here that he obtained the type of 
A. mogollonensis, though it is also common along Silver Creek and 
the Bursam Road. 
Specimens were taken along Silver Creek and the Bursam Road at 
Stations 38, 42, 43, 44, 45, from about 7,500 to 9,000 ft. elevation, 
and at Station 46, Little Turkey Creek, at about 9,000 ft. 
It is rather variable in size, specimens from Station 38 measuring 
from 16.5 to 21 mm. diameter, those from Station 46 from 17 to 19 
mm. Other localities in the Mogollons are Station 51, head of 
Mineral Creek, where there are some beautiful albino shells, and 70, 
76, 79, on Dry Creek, the shells mostly large. 
In Arizona it was taken in 1913 at Stations 59, 84, 86, all on or 
near the rim of the Blue Mountains, at 5,500 to 12,000 feet. The 
shells average larger than in the Mogollons, very few being under 
20 mm. in diameter. Specimens from Station 59 measure: 
