—— 
ce 
1915.] NATURAL SCIENCES OF PHILADELPHIA. 393 
Sonorella santaritana n.sp. PI. IX, figs. 1 to 3. 
The shell is depressed, umbilicate (the width of umbilicus con- 
tained between 6 and 7 times in diam. of shell), solid, between cinna- 
mon-buff and pinkish-buff, becoming whitish on the base, and 
having a chestnut-brown shoulder band bordered with white. 
The surface is rather glossy. Embryonic shell of 14 whorls; after 
a very short initial smooth stage, the surface becomes radially rippled, 
then densely granular, the granules lengthened in an obliquely spiral 
direction, becoming longer with the growth of the embryo, the last 
2 whorl of the embryo marked with threads forming V-shaped figures, 
their intervals densely, subregularly wrinkled radially. 
The post-embryonic whorls have very fine, inconspicuous growth 
lines and excessively faint spiral lines on the last whorl, above and 
at the periphery. The spire is very low conic. Whorls 43, convex; 
the last descends deeply in front. The aperture is very oblique, small; 
peristome narrowly expanding, pale brown at the edge, the margins con- 
verging, so that the thin, transparent parietal callusisshort. In the 
last whorl the umbilicus enlarges to about double its previous width. 
Alt. 13, diam. 238, width of umbilicus 3.6 mm.; aperture 
10.5 x 12 mm. 
Santa Rita Mountains, Arizona, in Walnut Canyon (a branch of 
Agua Caliente Canyon) at 
about 6,000 feet elevation, 
Station 5, Ferriss, Daniels 
and Pilsbry; 138-IX-1910. 
Type No. 112,105, A. N.S. P. 
Also taken at Stations 11, 12, 
13, 14, between 6,000 and 
7,000 feet, near the head of 
Agua Caliente Canyon; Sta- 
tions 7, 8, 16, in Madera 
Canyon, from about 5,700 to 
nearly 7,000 feet, and at 
Stations 9 and 10, in the head 
of Josephine Canyon, near 
the ridge connecting Mt. Hop- 
kins and Old Baldy, at about 
6,500 feet. 
Genitalia (fig. 4).—The 
penis and vagina are extremely 
long. Penis is rather slender, Fig. 4.—Genitalia of S. santaritana. epi., 
and lies in three folds in the _ epiphallus; pp., end of the penis-papilla. 
