194 BULLETIN OF THE 



the base of aperture, near the columella, an entering fold within the outer lip, 

 equidistant from the above described parietal and columellar folds, and a tiny 

 denticle above it. The columellar fold is not situated so high on the pillar as in 

 P. servilis. The latter half of the body whorl is flattened on the outer lower por- 

 tion, as the Figure J shows. There is a low wave-like ridge or "crest" also, but 

 scarcely visible in many specimens. Alt. 1.8, diam. 8 mm. 



Pupa hordeacella, Pilsbrt, Proc. Acad. N. Sci. Phila., 1890, p. 44, Plate I. Figs. 

 G, H, I, J, K. 



Arizona to Florida. 



The figures were drawn with the aid of the camera lucida. They should be com- 

 pared with Gould's excellent figures of P. servilis in the Boston Journal of Natural 

 History, Vol. IV., Plate 16, Fig. 14, and those of P. pel/ucida, in Strebel's Beitrag 

 zur Kenntniss der Fauna niexikanischer Land- und Siisswasser-Conchyhen, Theil 

 IV. Plate XV. Fig. 10. The latter are the more valuable in this connection, as. 

 they are not only faithful drawings on a sufficiently large scale, but are the only 

 ones drawn from continental specimens (Vera Cruz, Mexico). The measurements 

 given by Strebel and Pfeffer are, alt. 2|, diam. of last whorl fully 1 mm., alt. of 

 aperture | mm. Gould's P. servilis and Pfeflfer's P. pellucida were both described 

 from Cuba. I see no reason for not following W. G. Binney in considering them 

 synonymous, pellucidus having precedence. (Pilsbry.) 



The above is Pilsbry's description. I give also a reduced view of one of his 

 figures. 



Pupa Clementina, Sterki. 



Shell very minute, narrowly perforate, cylindrical, pale horn-colored, transpar- 

 ent, with rather obtuse apex ; whorls 5^, regularly increasing, moderately rounded, 

 with rather deep suture, smooth, with few microscopic striae, somewhat 

 shining ; last whorl occupying rather more than two fifths of altitude, 

 somewhat ascending to the aperture, with a slight, revolving impression 

 on the middle of its last one third, ending at the auricle ; a very slight, 

 flat crest elevation near the margin, only in the lower part ; aperture lat- 

 eral, scarcely oblique, subovate with the palatal margin slightly flattened, 

 upper part of same somewhat sinuous, peristome a little expanded with 

 a slightly thickened lip just at the margin ; lamellae 6, white, two on 

 the apertural wall, the apertural typical, and a rather long supra-aper- 

 tural, ending in a callus at the upper termination of the palatal margin ; columel- 

 lar one typical, horizontal ; basal very small, nodule-like, deep-seated ; palatals 

 two, typical, the inferior a little longer. Alt. 1.9, diam. 0.8 mm. ; apert., alt. 6, 

 diam. 5 mm. 



Three examples of this species were collected by Mr. H. Hemphill on San Cle- 

 mente Island, California, among numerous P. Californica, Row. All were exactly 

 alike, well formed and fully mature. They cannot be referred to any one of our 

 species published, and doubtless represent a form of their own, although so far it 

 was not possible to examine the soft parts. 



