THE NAUTILUS. 53 



It is an open field, and the climate is glorious. Take a guide, for 

 water is scarce. Tiie verification of these wonders is now left to Dr. 

 Pilsbry. He has the evidence. 



Ashmunella walkeri Ferriss, n. sp. 



The shell is raucli depressed, lens-shaped, acutely carinate peri- 

 pherally, rather thin and pale corneous-brown. The umbilicus, 

 narrow within, enlarges rapidly at the last whorl. Surface nearly 

 smooth, very lightly marked with growth-lines. Whorls 4^, sliglitly 

 convex, the last very shortly descending in front. Base more con- 

 vex than the upper surface. The aperture is small and very oblique, 

 the lip well reflexed, white, witli an obtuse, squarish tooth in the 

 outer margin and two compressed teeth in the basal margin, the 

 inner one smaller ; these three being nearly equally spaced. 

 There is a rather short, straight, obliquely set parietal tooth. Alt. 

 4|^, diam. 13^ mm. 



Florida Mountains, Luna Co., New Mexico. Found in a tumble 

 of rock near the top of the mountain, probably an elevation of G,500 

 feet. Only a few^ were found, and none found at any other place. 

 Cotypes in collections of J. H. F. and A. N. S. P. This very dis- 

 tinct species differs from all other known forms of the levettei group 

 in the small number of whorls. It is also fiatter and more acutely 

 keeled than any other Ashmunella. 



Oreohelix clappi Ferriss, n. sp. 



The shell is moderately depressed, the alt. about two-thirds the 

 diam., and about equally convex above and below the obtuse peri- 

 pheral angle. The umbilicus is about one-sixth the diam. and con- 

 tracts rapidly within. It is brownish-white under a thin greenish- 

 yellow cuticle with some darker oblique streaks and two indistinct 

 brownish bands. In old individuals the cuticle remains only in 

 small shreds. Sculpture of irregular growth-wrinkles and very fine, 

 faint spiral striae, nearly obsolete on the upper surface. Whorls 4|, 

 convex, the last double the width of the preceding, the first 1^ rad- 

 ially obliquely costulate. Base very convex. The aperture is short- 

 oval, nearly circular, and very oblique. The ends of the lips con- 

 verge, and in old shells are continuous, being connected by a short 

 raised parietal ledge. 



Alt. 9.G, diam. 15 to 16 mm. 



