1918.] NATURAL SCIENCES OF PHILADELPHIA. 319 



hinneyi 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. h. franciscana, and the last whorl oi franciscana is 

 a little wider, viewed from above. 



The diameter, in specimens seen, is from 17 to 19.3 mm. 



Ashmunella pilsbryana Feniss. 



Ashmundla -pilshryana Ferriss, Nautilus XXVII, 1914, p. 109. 



Ashmunella pilshryana Ferriss & Pilsbry, Nautilus XXIX, 181.5, p. 42, pi. 2, fig. 3. 



Arizona: Along the San Francisco River, frorn 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 Pilsbrv, Proc. A. N. S. Phila., 190.", 

 p. 2.52, pi. 16, figs. 101,102. 



Ashmunella moooUonensis Pilsbry, Nautilus XXIX, 1915, p. 42. Pil'^bry & 

 Ferriss, Proc. A. N. S. Phila., 1917, p. 9.3, pi. 7, fig. 10 (shell), and pi. 10, 

 fig. 3 (genitalia). 



Professor E. 0. Wooten, who discovered this snail, crossed the 

 INIogollon 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 

 1| 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 tj'pe of 

 .•1. 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: 



