Page:Land Mollusca of North America (north of Mexico) Vol. I Part 1 277-end.pdf/25

 In No. 118070 and 118047 the basal sheath of penis is but little larger than the distal part of the penis. In 118063, 118067 and 118049 it is quite thick, as in S. sabinoensis dispar.

We gave the name deflecta (Figs. 167 b, c), to a small form, 18 to 20 mm. in diameter, taken in several places about 5 miles north of " Mountain Sheep Camp ", in a quartzite outlier west of the Tucson Range. The shells are lighter colored than typical tucsonica, and in some, but not all, the suture descends rather deeply in front. However, this feature is equalled in some undoubted tucsonica; and I now regard its characters as due to an exceptionally dry station, and not racial. The genitalia are drawn in Figure 168 b, measurements in table, Station 59. One specimen in the long series seen lacks the dark shoulder band.

A shell (119331 A.N.S.P.) not distinguishable from "deflecta" was picked up by J. C. Blumer at the base of the Santa Catalina mountains 6 miles west of the mouth of Sabino Canyon. This was probably at about 3000 feet. It measures 11 x 20.5 mm. Perhaps it is a dry country dwarfed form of sabinoensis rather than a direct relative of " deflecta ".

Fig. 169. Sonorella galiurensis; a, type, and b, topotype. Sonorella galiurensis Pilsbry & Ferriss

Fig. 169. Sonorella galiurensis Pilsbry & Ferriss, 1919. Proc. Acad. Nat. Sci. Phila., for 1918, p. 298, pl. 5, figs. 5-6b; text-fig. 7.

The shell is umbilicate, the width of umbilicus contained about 7-1/2 times in that of the shell, between cinnamon-brown and sayal-brown in color, fading on the base, and much paler on both sides of the broad chestnut-brown band above the periphery; glossy. Embryonic whorls closely wrinkled-granulate, with close, forwardly descending threads on peripheral half of last embryonic whorl (often lost by wear in adult shells). Subsequent whorls lightly marked with irregular growth-lines, and sometimes weak impressed spiral lines below the last turn of the suture. The

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