THE NAUTILUS. 15 
Under plants on the summit of Thunderhead Mountain. (Mrs. 
Geo. Andrews, June, 1894.) 
With the general aspect of O. inornata, this species is even more 
polished, with somewhat rounder aperture and notably narrower 
spire. This last difference is very perceptible on comparing the 
upper surfaces of the two species. O. andrewse is also in the Acad- 
emy collection from Macon Co., Georgia, collector unknown. The 
name must not be confused with Zonites andrewsi, which is a species 
of Gastrodonta, a genus belonging to quite a different division of the 
Zonitide. O.rugeli is a more capacious shell with wider spire than 
andrews. 
0. Andrewse montivaga n. vy. 
Like the type in the shining surface, etc., but with five whorls, 
chestnut above, slightly paler and subtranslucent below ; last whorl 
more widened toward the aperture, more sloping. Aperture quite 
oblique, wider and shorter than in andrewse, the upper and basal 
margins sub-parallel ; baso-columellar lip very gently curved, not 
deeply rounded as in andrewse. Interior without white lining, 
having only a narrow white rib within the lip. Alt. 87; diam., 
greater, 17; lesser, 13°5 mm.; width of spire 8-5 mm. 
Same locality and collector. The very much straighter basal lip 
and lack of white lining differentiate this from preceding species. 
Gastrodonta (Pseudohyalina) patuloides n. sp. 
Shell about the size and form of Pyramidula striatella Auth. ; 
licht green, hardly transparent; irregularly but closely rib-striate 
above, below and in the umbilicus, the first 13 whorls smooth. 
Whorls 43, slowly increasing, convex, with impressed sutures; last 
whorl rather tubular, rounded at periphery and below; aperture 
about the size of umbilicus, round-lunate, flattened above, lip sim- 
ple, the upper margin flattened down and arched forward, as in Sele- 
nites or Gastrodonta elliotti; retracted at insertion. Umbilicus large, 
showing all the whorls very plainly. Alt. 2°5, diam. 5-1 mm.; 
aperture, alt. and width about 1°8 mm. 
Thunderhead Mountain, under bark of a rotten log with P. alter- 
nata (ribbed), P. perspectiva, Gastrodonta elliotti, etc. (Mrs. George 
Andrews. June, 1894). 
Two adult specimens collected. It is much smaller than G. elli- 
ottt Redf., with far larger, open umbilicus and heavier sculpture, 
recalling a Pyramidula. 
