510 PROCEEDINGS OF THE ACADEMY OF [Nov., 
This Carr Canyon race is intermediate between typical levettei and 
bifurca. 
Ashmunella levettei bifurca n. subsp. 
In Tanner Canyon the shells resemble those of Carr Canyon. They 
are glossy, dark chestnut colored, depressed, the last whorl angular 
in front. The aperture is small, the lip-ends' connected by a distinct, 
often heavy parietal cord. The outer lip-tooth is pushed farther back — 
into the mouth, The parietal tooth curves inward at its axial end, and 
usually gives off a distinct branch from the distal end, though this 
may be weak or wanting in some examples. The umbilicus is usually 
wider than in other forms of levette?. The whorls coil closely. 
Fig. 9. Ashmunella levettei bifurca. Type. 
Alt. 6.6, diam. 15, diam. of aperture 6.9 mm., whorls fully 64. 
This race is intensified in the development of apertural teeth. 
A. mearnsi (Dall) is more depressed and has less numerous, less closely 
coiled whorls. 
The spermatheca is more slender, scarcely sacculate or less con- 
‘spicuously so than in other Huachucan species, and is a little enlarged 
towards the end, the lower part of the duct slender. 
Ashmunella levettei angigyra Pils. 
Proc. A. N. 8. Phila., 1905, p. 240, pl. 14, figs. 47-54 (shell); pl. 21, fig. 28 
(genitalia) ; pl. 22, fig. 12 (teeth) ; pl. 23, fig. 14 (jaw). 
Smaller, more depressed than levette:, and more or less angular at 
the periphery, teeth contracting the aperture more. 
The types, described and illustrated as above cited, were from 
Ramsey Canyon (called ‘Conservatory Canyon” in the original 
paper). Those from northwestward and along the warm dry slopes 
of the ridge are more typical of the race, being smaller and more 
angular. The parietal tooth is straight and rather small, without an 
outer branch. It occurs along the northeastern side of the range from 
northwest to southeast as follows: Babokomari Creek; Fort Huachuca; 
Tanner Canyon, over the range, west fork, and along cliffs south of 
