318 PROCEEDINGS OF THE ACADEMY OF _ [Nov.—Dec., 
The size of the shell is rather variable, the extremes of diameter 
in a series from Station 17 being 20 and 24.6 mm. The largest 
specimen noticed measures 26.4 mm. An individual without a 
dark band is photographed in fig. 4. It is from Station 19, Blue 
River, at the mouth of Pigeon Creek. Two other shells from this 
station are illustrated in figs. 2, 2a and 3, 3a. 
Sonorella binneyi franciscana n. subsp. PI. VI, figs. 5, 5a, 5d. 
The shell is umbilicate (width of umbilicus contained 9 to 10 
times in that of shell), light pinkish cinnamon with some paler or 
white oblique streaks and indistinctly paler on both sides of a chest- 
nut-brown band above the periphery. This band shows above 
the suture of the last half of the penult whorl. The surface is glossy; 
embryonic shell of about 114 whorls, the first half having some radial 
ripples, the next whorl minutely granulate, having oblique, curved 
threads, protractive below, retractive above; the later whorls with 
fine, unequal growth-lines. The whorls are convex, slowly increasing 
at first, the last rapidly widening, descending a little in front. The 
aperture is unusually large, shortly oval-lunate. The peristome is 
very narrowly expanded, straightened and dilated towards the 
columellar insertion. 
Alt. 11.6, diam. 19mm., aperture 9.8x11.5 mm.; 44 whorls. 
San Francisco River, Graham Co., Arizona; type locality, Station 
92 (1913), above Sardine Creek. Also taken at Station 93 in the 
same vicinity, and at Station 13 (1914), 2 miles above Harper’s. 
Ferriss and Daniels. 
The head and back are dark grayish brown shading into dark 
vinaceous drab downward and backward, the tail light colored. 
Genitalia (Fig. 12b). The penis contains a cylindric papilla with 
blunt, rounded end. The epiphallus is about twice as long as the 
penis, and bears a small flagellum. The penial retractor inserts on 
the epiphallus some distance (over = mm.) above the penis. The vagina 
is nearly or about as long as the penis. ~Measurements follow: 
DEACON A Sue ce ct oo eee 13 13 93 
Length of penis vec %. “oe eee e 5 6 7 mm. 
Papillayee eae ae 2 2.3 SEs ok 
epiphallus- seas fac. «.. 10.5 10 10.5=°° 
Hamelin. ec 0.5 0.7 small 
penial retractor..... 3.3 Ae wi 
WAU 5; ia oe a ee 4.7 5 5.5 mm. 
Miurseum Noe ein a ees 119,044 119,044 109,413 
By its genitalia and shell this subspecies is closely related to S. 
Pay? 
Yeiees 
aol 
See foe ee. 
Hyer 
Se ee ee nb 6 eer 
A. 5 - tore 
