266 PROCEEDINGS OF THE ACADEMY OF [Mch., 
Mr. Ferriss did not find S. dalla. He thinks that Tanner’s'is another 
name for Garden Canyon of the sketch map on p. 212. 
Sonorella virilis n. sp. Pl. XVII, figs. 15, 16. 
The shell is openly umbilicate; pale brown, lighter around the um- 
bilicus, with a dark band above the periphery, and visible on about 24 
whorls above the suture, with borders a trifle paler than the ground 
color. Whorls 44, the earlicr 14 forming a slightly rugose embryonic 
shell. The next 1 or 14 whorls are striate, the striae appearing slightly 
broken into granules. The last whorl has the usual slight growth-lines, 
and near the end some spiral lines are visible, in the vicinity of the 
suture. The whorl descends rather deeply, and is well rounded 
peripherally. The aperture is rather large, oblique and rounded, the 
upper, outer and basal margins about equally arcuate. The outer and 
basal margins of the thin lip are slightly expanded. Alt. 11, diam. 19.5, 
umbilicus 3.1 mm.; aperture 9.3 mm. high, 10 wide. 
Chiricahua Mountains, at 7,500 feet elevation, collected by V. Owen. 
Type 79,622, A.N.8. P. 
There are no longitudinal lines on the sole. The pebbly-granose back 
and the eye-stalks are blackish-gray, becoming much paler dirty brown- 
ish-white on the sides and tail. Dorsal grooves are but weakly indi- 
cated, and there is no longitudinal median line on the tail. 
' The kidney is wedge-shaped, 15 mm. long. Pericardium 5.5 mm. 
long. 
Genitalia (Pl. XX, figs. 21, 22). The penis is relatively enormous, 
more than double the length of the vagina, and much longer than the 
spermatheca and its duct. It has the usual thin wall, enclosing a 
fleshy “papilla” about 29 mm. long (fig. 21). ‘The epiphallus is also 
very long, slender and convoluted. The vagina is much convoluted. 
The spermatheca has the usual globular shape; and its slender duct, 
while long, is shorter than in other species of equal or greater size. 
The jaw (Pl. XXIII, fig. 21) has four broad ribs grouped near the 
middle. 
S. virilis is slightly smaller than S. hachitana, with more rounded 
aperture and weak spiral lines near the suture. From the shell 
alone I would not separate this form more than varietally from S. 
hachitana; but the enormously developed oc‘ reproductive organs indi- 
cate one of the most distinct species of the genus. The jaw has few 
ribs, asin S. h. bowiensis. It is not closely related to any other species 
I have dissected. 
The faint spiral lines of the shell are perbaps its most important 
differential feature. 
