Page:Land Mollusca of North America (north of Mexico) Vol. I Part 1 277-end.pdf/21

 One figured (Fig. 164 g) measures: height 13.7, diameter 21 mm. In the same lots the larger shells have a diameter of 25 mm. or slightly more.

Fig. 165. Genatalia of: a, b, Sonorella sabinoensis; c, d, S. sabinoensis buehmanensis; e, f, S. sabinoensis dispar.

Like other species of the dry lower mountains, living snails are rare. In one rock slide in Buehman Canyon, 360 fairly good " bones " were found, and only 8 living snails.

Sonorella sabinoensis dispar new name Fig. 164 f.

Sonorella sabinoensis occidentalis Pilsbry & Ferriss. 1919. Proc. Acad. Nat. Sci. Phila., for 1918. p. 291. pl. 5. figs. 1-1b; text-fig. 4. Not S. granulatissima occidentalis Pilsbry & Ferriss, 1915.

The shell appears indistinguishable from S. sabinoensis.

Height 16.3 mm., diameter 28 mm.; 5 whorls.

Height 17.3 mm., diameter 26.8 mm.; 5 whorls. Type (Fig. 164 f).

Height 15.3 mm., diameter 26.5 mm.; 4-1/2 whorls.

Height 15 mm., diameter 23.4 mm.; 4-2/3 whorls.

Genitalia (Fig. 165 e, f). The penis is slender except at the base where it is suddenly dilated. Internally there is a short, sinuous fleshy fold and several minor folds in the dilated part of the penis where it passes into the atrium, which also contains several fleshy ridges. The verge is long, slender and corrugated. Penial retractor is terminal and enveloping base of the epiphallus, as usual. The epiphallus is nearly as long as penis, with a slight distal swelling (or a minute flagellum). The vagina is shorter than the penis. Measurements in mm. follow:

Penis Verge Epiphallus Flagellum Vagina Spermatheca   Locality and duct 10 8 8 0 6 32 Type 8.5 6 7.5 minute 4 23 Sta. 37 9 6.5 7.5 minute 6 .. "45

The head and back are hair brown, fading to drab on the sides, the tail and entire sole being dull chamois to dull cream-buff.

Arizona: Western end of the Santa Catalinas (J. H. Ferriss), Type 119491 A.N.S.P., from Station 36, east side of Pima Canyon. Also on the west side, Station 37 (Pusch Ridge); Station 43 (1917), northeast of Sutherland's Ranch, in the foothills; Station 45, in the large canyon north of Romero Canyon (eastward from Sutherland's).

Generated on 2012-11-05 12:13 GMT / http://hdl.handle.net/2027/uc1.31822013176466 Public Domain, Google-digitized / http://www.hathitrust.org/access_use#pd-google