264 PROCEEDINGS OF THE ACADEMY OF ; [Mch., 
(Ramsey Canyon) (Carr Canyon) 
Alt. 10.7 17 144 11.8 10.8 10.2 11.3 
Diam. 19.9 19.5 19.2 20.5 18.8 3 17.5 Lz 
(Miller Canyon) 
Alt. 115.0 Om 9 mm. 
Diam. 20 19.6 1S. 
6. On the south side of the range, specimens were taken in Cave 
Creek Canyon, typical in form and sculpture, but larger, 12.6 x 20.8 
mm. 
7. Ida Canyon (Pl. XVIII, figs. 36, 37, 38). Typical in shape and 
color, but with slightly effaced granulation, very weak spirals, and 
variable size. 
Alt. 11.9 10.4 9.3 mm. 
Diam. 21,3. -~19Bet SES 
8. Bear Canyon. Similar to the Cave creek form, 11 x 19.3 mm., or 
more depressed, like Miller Canyon shells, 10.7 x 20.8 mm.; umbilicus 
2.9 mm. 
Sonorella granulatissima parva 0. subsp. Pl. XVIII, figs. 45-47. 
Shell with the sculpture of S. granulatissima, but much smaller, and 
subangular at the periphery. Whorls 44, convex, parted by well-im- 
pressed sutures, the last moderately descending in front. The band is 
wide, without pale borders, and is visible on two or two and a half 
whorls. 
Alt. 93° 10 9° mm, 
Diam. 16 16 15.2% 
Alt. apert. 7.4 = 
Diam. apert. 8.3 s 
Umbilicus 2.4 SS 
West end of the Huachuca Mountains, between Fort Huachuca and 
Manilla Mine. Types No. 87,114, A. N.S. P., collected by James H. 
Ferriss, 1904. 
Eleven specimens of this small form were obtained at the place men- 
tioned. Itis chiefly notable for the subangular periphery, very unusual 
in Sonorella. It is very similar to S. mearnsi Bartsch, differing in the 
wider umbilicus and more oblique aperture. S. mearnst may prove 
to be a subspecies of S. granulatissima, but its internal anatomy is 
unknown. 
Sonorella granulatissima latior n. subsp. Pl. XVIII, figs. 24-28. 
This form is very similar to S. granulatissima, from which it differs 
in the usually larger size and the more depressed last whorl. The granu- 
