246 NILS HJ. ODHNER 



h. 15,5 (figs. 50 — 52), and ^Vi, 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, i 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, i small sh. — The Portezuelo quebrada, to 200 m, among leaves 

 and on ferns, 2 shs., h. 9. 



Succinea pinguis (Pfeiffer) Reeve. — One large empty shell, and some 

 smaller specimens with animals, were collected in Masafuera, the original locahty 

 of this species, the ^^U and Va 191 7; 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. ainiingi, 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 vS". cumingt. 

 Young specimens have a much similar patulous habitus. 



Succinea ciimingi Reeve. — Masatierra, '^U 191 7, shaken down from 

 bushes, about 500 m above sea, i sp., 1. 8 (shell), and ^^4, among leaves, i sp., 

 1. 8,8 (sh.). — Aug. 191 7: Rabanal, among leaves, a few sps., max. 1. 13, sh. 7,3. 

 — Salsipuedes Ridge, about 350 m, 2 shs., max. 1. 10. — Piedra Agujeriada 

 Valley, some shs., max. 1. 8. — Centinela Ridge, about 350 m, thick forest, 

 I sh., 1. 10. — Puerto Ingles, about 300 m, thin forest, 2 shs., 1. 10, and about 

 400 m, thick forest, i sh., 1. 10. — The Portezuelo quebrada, up to 200 m, 

 among leaves and on ferns, 3 shs., max. 1. 9. — Pangal, on ferns and under 

 leaves, i sh., 1. 9. 



vS. 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 5. cumingi in being more broadly rounded and in having a broader 



