1905.] NATURAL SCIENCES OF PHILADELPHIA. 233 
Near Baldonado Springs, Capitan Mountains, Lincoln county,’ New 
Mexico, clevation 8,200 fect, collected by E. H. Ashmun. 
This form is at present well separated from pseudodonta by the uni- 
formly much larger size. The basal teeth are also less developed, and 
the lip comparatively narrower. It is to pseudodonta as robusta is to 
ashmuni. It has reached about the same stage of evolution as A. hypo- 
rhyssa, A. a. robusta and A. chiricahuana. In the lot of 100 specimens 
taken by Mr. Ashmun there is one pale greenish-corneous albino. 
Ashmunella ashmuni (Dall). Pi. XII, figs. 19, 20. 
Polygyra ashmuni Dall, Proc. U. 8. Nat. Mus., XIX, p. 342, 1896. 
Ashmunella ashmuni (Dall) Pils. and Ckll., Proc. Acad. Nat. Sci. Phila., 1899, 
p. 192; Ancey, Jour. of Malac., VIII, p. 76; Dall, Proc. U. S. Nat. Mus., 
XXIV, p. 501, Pl. 28, figs. 4, 6, 9. 
This species is small, much like A. pseudodonta, but there is scarcely 
the trace of a basal tooth. The outer lip is well thickened within, and 
there is no parietal tooth. The usual wrinkle-like growth-lines are 
present, but spiral lines are very faint, not discernible in some speci- 
mens. Five of the original lot measure: 
Alt., 7.4 re 7 6.9 6.7 mm. 
Diam., 14.2 14 14 13.1 ay eas 
Bland, New Mexico. E. H. Ashmun. 
Ashmunella ashmuni robusta n. subsp. Pl. XII, figs. 24-26. 
Polygyra chiricahuana and Ashmunella chiricahuana, in part, of various 
authors, specimens from Jemez Mountains and at Jemez Sulphur Springs, 
New Mexico. 
The shell is similar in size and general contour to A. p. capitanensis; 
chestnut or greenish-chestnut colored, glossy, sculptured with low, 
irregular growth-wrinkles which are strongest below the suture, and 
weaker on the base, and very fine incised spirals, close and numerous 
but very lightly impressed. The spire is very low conoid. Whorls 
4, convex, the last about double the width of the preceding, its last 
third decidedly swollen, inflated behind the deep constriction back of 
the lip. The aperture is roundly lunate, without teeth. The lip is 
coffee-tinted, rather narrowly reflexed, convex on the face, and a little 
thickened inwardly within the outer margin. There is no parietal 
tooth. The umbilicus is cylindric within and deep, rather broadly 
expanding at the last whorl, exposing the penultimate whorl. 
Alt., 9.2 8.6 8.7 9 mm. 
Diam., 19 17.2 17.6 1G. 
Jemez Mountains, near Bland, New Mexico, at higher elevations than 
A.ashmumi. E. H. Ashmun. 
