MUSEUM OF COMPARATIVE ZOOLOGY. 201 
Liguus fasciatus, Motz. 
Plate I. Fig. 5, 
The Vaccas Key variety, noticed in page 435 of the Manual of American 
Land Shells, is figured in the plate. 
Orthalicus undatus, Brue. 
Plate II, Fig, 4, 
I give a new figure of the variety of this species. 
Holospira Arizonensis, STEARNS. 
Shell dextral, elongately cylindrical, pupiform, dingy white to pale horn-color, 
translucent. Number of whorls, twelve to thirteen. Slightly convex, the su- 
tures distinctly defined. The upper six or seven 
whorls rather abruptly tapering towards the obtuse 
apex, which has a slightly twisted and rather a 
papillose aspect. The last whorl'is curved under 
and constricted back of the mouth, forming an 
umbilical notch. The apex and following whorl 
are smooth; the three or four succeeding whorls 
sharply and somewhat obliquely plicated longitu- 
tudinally, the median and following whorls be- 
coming somewhat obscurely sculptured other than 
by distinct growth lines. The basal whorl is 
strongly sculptured below, and back of the mouth, 
and obtusely angulated underneath. Aperture 
ovate, slightly angulated anteriorly, somewhat 
effuse, rimmed and projecting. The dimensions of two examples are as 
follows : — 
mm. 
LOOTO Ste et tines Ve a een 124 
ROU SMUG ie ann ee ae we 
yrei helera are ae ee 
rea a her a aa 
Dos Cabezas, Arizona, where the above two specimens and numerous fragments 
were found in a cave in November, 1889, by V. Bailey, and contributed to the 
United States National Museum (No. 104,392) by Dr. C. Hart Merriam. 
Among the species of this group that are geographically related is 77. Remondi, 
Gabb, described from Arivechi, Province of Sonora, Mexico, a form sharply sculp- 
tured throughout, and in minor ‘features also different; H. Pfeifferi, Menke, col- 
lected by Remond at Hermosillo, in the same province, with the previouslv named 
