94 PROCEEDINGS OF THE ACADEMY OF [Feb., 
On the west slope of Snow-shed Mountain, at the head of Cave 
Creek, almost one continuous talus, was acolony similar to the preceding. 
Shell transparent when young, occasionally with 5 short fringes. 
Diam. only 104, alt. 5? mm. 
In a dry talus fully exposed to the sun and sloping to the south 
on the head of Rock Creek was a colony heavily covered at maturity 
with 9 or 10 black fringes, periphery rounded as in the Rustler Park 
and Barfoot Park specimens; aperture 44 mm. Margins connected 
by a thick callus; umbilicus varies from 3 to 34. Diam. 11, alt. 64. 
The five colonies above were found by Ferriss in 1908. 
In 1907 Ferriss and Daniels found a small heavily fringed form in 
the talus of a gulch in the head of the southeast fork of Pinery Canyon, 
that in fringes resembles the type of barbata. 
Like the above it had from 9 to 10 long fringes. The last whorl 
dropped but one mm. Diam. 11, alt. 6, aperture 4 mm. 
Oreohelix barbata minima n. subsp. PI. VI, figs. 6, 7. 
At the head of Rucker Canyon (Station 1144) and in the Rucker 
Box, Ferriss and Daniels found colonies in 1907 that were still further 
depauperate than the above. Ferriss relocated the latter colony in 
1908. These shells possess 44 to 44 whorls, the last whorl regularly 
angular, the angle weakening near the aperture in oldshells. Toward 
the end the whorl falls deeply at maturity. There are from 6 to 7 
spiral fringes in the best preserved examples, but adults generally 
are denuded or show only traces of the spiral wreaths. The margins 
of the lip converge and form a perfect union in maturity, being joined 
by a very short parietal callus, and the aperture is sometimes raised 
above and free from the penultimate whorl. 
The shells from the head of Rucker are uniform brown in color and 
measure: 
Alt. 5, diam. 10.3, umbilicus 3, | diam. aperture 3.5 mm.; whorls 43 
ci, © aha, Ce: a ee et 
Those from Rucker Box are light brown, sometimes albinistic, light 
green. , 
Six specimens from the Box of Rucker Canyon, type locality, 
measure : 
HT RO eal a ere pean er a eet 5.8 9.25 6 5.25 5.25 5) 
1D VEN aie select ane es 10 10.5 10 10 10 10 
This is the most decadent race, being reduced in size in addition to 
the deeply descending last whorl and in old shells the nearly or quite 
free peristome. Colonies of larger forms of O. barbata occur at greater 
