162 PUPILLA, AMERICAN. 



weaker crest; the lip is but slightly thickened within. The 

 shell is short, cylindric with rounded ends, walnut-brown, 

 slightly shining. Whorls somewhat convex, the last slowly 

 ascending a little in front, somewhat flattened and tapering 

 to the narrow base, noticeably contracted behind the lip, hav- 

 ing a quite low (or sometimes rather strong) crest of the 

 same color as the rest of the shell. Parietal lamella deeply 

 placed, about one-third of a whorl long. Lower palatal fold 

 rather long. Columellar lamella well developed, short. The 

 type and paratypes, from Sta. 39, Black Range, measure : 



Length 3.2, diam. 1.8 mm.; type. 



Length 3.7, diam. 1.7 mm. ; 7% whorls. 



Length 3.25, diam. 1.75 mm. ; 6y 2 whorls. 



Length 3.05, diam. 1.7 mm. ; 6% whorls. 



In the eastern counties of Arizona this form occurs with 

 P. hebes, which it resembles very closely except in having 

 teeth. 



P. blandi sublubrica (Ancey). 



Pupa sublubrica Ancey was considered by W. G-. Binney 

 to be a synonym of P. muscorum, but Mr. Ancey in a letter 

 to me stated that it is " a slender var. of Pupa blandi Morse. ' r 

 Translation of the original description follows. 



"Pupa sublubrica C. F. Ancey. Length 3%, width 

 mm. Shell elongate, cylindric, thin, pellucid, glossy, rimate, 

 corneous; apex obtuse; closely, minutely, slightly striate. 

 Whorls 8, convex, regular, the last slightly subturgid, then a 

 little contracted at the aperture. Aperture truncate-oval, 

 provided with two teeth within, one parietal, the other oppo- 

 site this, basal; both white, quite deeply placed. Peristome 

 thin, expanded. 



"This species differs from the preceding (P. hebes) by the 

 more shining shell, the number of whorls, the striae of growth 

 even less marked, more obsolete than in P. hebes, the more 

 lengthened, more cylindric form, the external swelling and 

 contraction preceding the aperture especially less marked, 

 finally by the two teeth of the latter. Both are situated 

 quite deep in the aperture, one on the parietal wall, the other, 

 elongate, in the base, but a little towards the right. Like P. 

 hebes, it is separated from P. muscorum L. by the lack of a 

 white calcareous deposit within the aperture. State of Ne- 

 vada, Dr. Newcomb." 



