1905.] NATURAL SCIENCES OF PHILADELPHIA. 275 
co-type before me, having the same ample umbilicus and blunted sculp- 
ture. Whether these shells are to be regarded as really identical with 
the Huachuca concentrata, or as a parallel dwarf race independently 
evolved, is a question remaining to be determined by a study of the 
forms from the lower canyons of the Hacheta Grande Mountains. 
Oreohelix strigosa huachucana (Pils.). Pl. XXIV, figs. 5-7 (types). 
“ Pyramidula” strigosa huachucana Pils., Proc. Acad. Nat. Sci. Phila., 1902, 
yoy; eal le 
1. The types are from ‘Conservatory Canyon,” otherwise known 
as Ramsey Canyon, on the northeastern slope of the Huachucas 
between Brown and Carr Canyons. 
They are depressed with a broad umbilicus, exposing more of the 
penultimate whorl than strigosa,® and it is also more ample within. 
There are 5 whorls, of which 24 are embryonic. The tip is a little de- 
pressed ; the first whorl is delicately striate or wrinkled in an obliquely 
radial direction. On the second whorl weak raised spiral lines usually 
set in; and the last embryonic whorl is rather coarsely, irregularly 
wrinkled radially, and finely striate spirally, with (in some shells) sev- 
eral raised threads on the last half whorl. These cease abruptly at the 
end of the embryonic stage. The following whorls are irregularly, 
obliquely wrinkled and have at most obsolete spiral lines or traces of 
them in places, often almost imperceptible. The base has no spiral 
striation as a rule, but in some specimens from Carr Canyon there are 
faint spirals there. Up to the end of the fourth whorl the periphery is 
strongly carinate, but in adult shells it is nearly angular in front, the 
last half or more becoming rounded. The suture follows the crest of 
the keel, and usually descends a trifle to the aperture. 
The shell is flesh-colored above, with irregular whitish streaks or 
maculze; beneath, the opaque white predominates more, and there 
is a purplish-brown band close to the periphery (but 4 or 5 of 25 exam- 
ined are equally flesh-tinted beneath, and lack the band, Pl. XXIV, 
fig. 8). The aperture is small, very oblique, with the ends of the lip 
approaching. The peristome is not expanded. 
Alt. 10.5, diam. 21.8, width of umbilicus 6 mm.; aperture 8.8 mm. 
wide. Types No. 83,370, A. N.S. P., collected by James H. Ferriss. 
The reproductive system of one of the types is figured (Pl. XIX, 
®It was evidently this race which Dr. R. E. C. Stearns reported from Fort 
Huachuca as Helix (Patula) hemphilli Newe. (Proc. U. S. Nat. Mus., XVI, 1893, 
p. 745), and Dall from the Huachuca Mountains, as P. strigosa (Proc. U. S. Nat. 
Mus., XIX, 1896, p. 335). 
®The comparisons are with typical O. strigosa from the extreme Northwest, 
which is identical with Hemphill’s var. parma. 
