106 
last occupying more than ¥% altit.; aperture subovate or nearly cir- 
cular, margins much approximate and the ends protracted, per- 
istome shortly but decidedly expanded; lamellar one, apertural, 
small. Alt. 2,5; diam. 1,5 mill.’’—Sterki. 
‘he above descriptions are based on material furnished by 
Henry Hemphill. 
1493 Pupa Dalliana Sterki. 
“Shell conie or ovate-conic, of greenish-horn color, transpar- 
ent, finely irregularly striate in the lines of growth, polished, 
whorls 4%, well reunded, with deep suture, rather rapidly in- 
creasing, the last cccupying about 2-3 of altit., towards the aper- 
ture somewhat escending on one penultimate. Aperture lateral, 
somewhat oblique, subovate with just perceptibly flattened palatal 
margin; margin approximate, the ends protracted; peristome 
shortly but decidedly expanded, with a very fine callus on the 
apertural wall inside of the line connecting the ends of the mar- 
gins; palatal wall quite simple; no lamelle. Alt. 1.2; diam. 1.2 
mill.’’—Sterki. 
Type locality:—near Clear Lake, Lake Co., Cal. (Henry 
Hemphill). 
Named in honor of William Healey Dall. 
1494 Pupa Hemphilli Sterki. 
Sterki compares this with P. calamitosa Pilsbry, describing 
this as averaging a trifle larger, but says either is somewhat varia- 
ble in size. While calamitosa has a minute perforation, hemp- 
hilli is umbilicated in quite a peculiar way: there is a nodule- 
like projection on the umbilical part of the last whorl producing 
a rima beside the umbilicus; in calamitosa there is nothing of 
this formation. On the other hand, the latter has a small but 
distinct groove-like impression just at the base, near the aperture 
appearing as a slight projection inside; this feature is wanting in 
hemphilli—Lamelle: in the latter species, when looking from 
front only one is generally seen in the palatal wall, corresponding 
to the superior one in calamitosa, but longer, i. e., beginning 
deeper in the throat, and fairly seen on the outside, also marked 
there by a corresponding impression, ascending in a curve from 
near the base; a little distant from its inner end, just above the 
projection mentioned, there is another lamella beginning, directed 
toward the base and ending there, also seen on the outside. Quite 
generally there is a very small, thin, but well-formed lamella in 
the palatal wall near the projecting auricle. The columellar fold 
is quite short and small in hemphilli yet consisting of a vertical 
and a horizontal part; the (main) apertural lamella is decidedly 
longer in hemphilli, and the supra-apertural higher and entire, 
while in calamitosa it is evidently composed of two parts marked 
by an indentation in the middle, or even entirely separated, in 
quite mature specimens, 
Type locality:—banks of Santo Tomas river, Lower Cal. 
(Hemphill). Also collected at San Diego, Cal., by Hemphill, Orcutt 
and others. 
1495 Pupa clementina Sterki. 
“Shell very minute, narrowly perforate, cylindrical, pale horn 
colored, transparent, with rather obtuse apex; whorls 5%, regu- 
larly increasing, moderately rounded, with rather deep suture, 
smooth, with few microscopic strie, somewhat shining; last whorl 
occupying rather more than 2-5ths of altit., somewhat ascending 
to the aperture, with a light, revolving impression on the middle 
