246 NILS HJ. ODHNER 
h. 15,5 (figs. 50—52), and 78/1, 50 m above sea, a few sps., max. h. 18,5. — 
Pangal, in the bottom of the quebrada, in ferns and under leaves, many shs., 
max. h. 11,5. — Rabanal, in the quebrada, under leaves, 1 sh., h. 11. — Puerto 
Ingles, about 300 m, thin forest, 2 shs., max. h. 10,4. — The Yunque quebrada, 
lower part, 4 shs., max. h. 10,4. — Below Damajuana, about 300 m, under 
leaves, 4 shs., max. h. 11,5. — Centinela Ridge, 500 m above sea, on ferns and 
under leaves, 1 small sh. — The Portezuelo quebrada, to 200 m, among leaves 
and on ferns, 42 ishs:, hyo! 
Succinea pinguis (Pfeiffer) Reeve. — One large empty shell, and some 
smaller specimens with animals, were collected in Masafuera, the original locality 
of this species, the 73/2 and ?/3 1917; it was noted that the species was common 
among ferns in a height of about 1000 m above sea. The shell measured 
14,5 mm in height and 9,5 mm in breadth and contained 3 whorls. Though 
smaller in size, it agrees well with the figure in REEVE (Conch. Icon. 18, fig. 55). 
The species is easy to recognize on account of its sculpture, which, in the 
large specimen, resembles that of S. cumingz, though it is more indistinct; no 
microscopic striae are visible, but the peculiar stripes composed by diverging 
short lines are observable; in smaller specimens also these are indistinct. As 
regards this sculpture it seems probable that this species, though rather different 
in shape, in adult specimens at least, may be nearly related to S. cumingz. 
Young specimens have a much similar patulous habitus. 
Succinea cumingi Reeve. — Masatierra, '/4 1917, shaken down from 
bushes, about 500 m above sea, I sp., |. 8 (shell), and 7°/4, among leaves, I sp., 
l. 8,8 (sh.). — Aug. 1917: Rabanal, among leaves, a few sps., max. |. 13, sh. 7,3. 
— Salsipuedes Ridge, about 350 m, 2 shs., max. ]. 10. — Piedra Agujeriada 
Valley, some shs., max. |. 8. — Centinela Ridge, about 350 m, thick forest, 
1 sh., l. 10. — Puerto Ingles, about 300 m, thin forest, 2 shs., ]. 10, and about 
400 m, thick forest, 1 sh. 1. 10. — The Portezuelo quebrada, up to 200 m, 
among leaves and on ferns, 3 shs., max. l. 9. — Pangal, on ferns and under 
leavess=p ish. 2hvo: 
S. cumingi is well distinguished by its thin shell of a patulous ovate shape 
and by the depressed rapidly increasing apical whorls — the adult specimen, 
h. 10 mm, does not comprise fully 2 whorls — as well as by its peculiar spiral 
sculpture. This consists of fine microscopical striae all over the shell, together 
with some distant spiral lines represented in the upper half of the shell by 
shallow furrows, in the lower half by stripes composed of short diverging 
impressed streaks. The body whorl above the aperture is in its broadest part 
only a third of the breadth of the aperture, and the columella bears a very 
narrow stripe of callus. The shape of the shell varies a little in being some- 
times broader than usual. 
Succinea semiglobosa Pfeiffer. — Though I have not had typical specimens 
for comparison at my disposal, I refer to this species a patulous thick-shelled 
form, the shape of which corresponds to REEVE’s fig. 88 (Conch. Icon. 18). It 
differs from S. cumzngi in being more broadly rounded and in having a broader 
