98 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
A. Vescor, Dohrn. 
Hydrocena Vescoi, Dohrn, Malak. Blatt., 1859, p. 202. Pfeiffer, Mon. Pneum., iii, p. 172. 
Omphalotropis Vescoi, Pease, Jour. de Conch., 1869, p. 153. 
Alropis Vescoi, Pease, Proc. Zool. Soc., 1871, p, 476. 
Realia Vescoi, Martens and Langk., Don. Bism., p. 58, Pl. III, fig. 26. Pfeiffer, Mon. Pneum., 
iv, p. 210. 
More rare than the preceding species, and only occurred to my notice in one valley 
on the north side of Tahiti, where they were found on the side of a ravine about 1500 
feet above sea-level 
Smaller and more solid than abbreviata, and more or less decorticated. Usually 
ruddy corneous with a luteous or ochraceous aperture, 
A. VIRIDESCENS, Pease. 
Cyclostoma viridescens, Pease, Proc. Zool. Soe., 1861, p. 243. 
2 Realia viridescens, Pfeiffer, Mon. Pneum., iii, p. 171; iv, p. 209. 
Blanfordia viridescens, Carpenter, Proc. Zool. Soc., 1864, p. 676. 
Omphalotropis viridescens, Pease, Jour. de Conch., 1869, p. 153, Pl. VII, fig. 7. 
Atropis viridescens, Pease, Proc. Zool. Soc., 1871, p. 476. Schmeltz, Cat. Mus. Godeff., v, 
p- LOL. 
Not uncommon, and widely diffused over Huaheine. It also occurs sparingly, of 
larger size, in a single valley on the southeast part of Raiatea. On the ground in 
forests, and ranges from 100 to 500 feet above sea-level. 
Mr. Pease’s type specimens were collected by me at the former location. THis 
description being very short, I redescribe it as follows :— 
Shell rimate, elongate-conic, rather thick, smooth, under the lens finely striated, 
corneous, rarely brownish or olivaceous, aperture whitish or pale luteous; spire 
elongate-conic, with slightly convex outlines; apex subacute; suture deep; whorls 
7-84, strongly convex or convexly rounded, slowly and somewhat irregularly increasing, 
last one rounded at the base; aperture vertical, orbicular-ovate, nearly one-fourth the 
length of the shell; peristome continuous, straight or slightly expanded at the base, 
rarely duplicated and briefly adhering to the penultimate whorl. 
Length 7-8, diam. 25-22 mill. 
They are frequently denuded of the thin, smooth epidermis, and some have a more 
rapidly tapering spire than others. The Raiatea shells are usually corneous, rarely 
brownish and never olivaceous 
A. BytHINELL&rormis, Garrett. Plate IIT, fig. 73. 
Shell perforated, oblong, conical, rather thin, scarcely shining, smooth, corneous, 
or light brownish under a thin epidermis ; spire oblong, convexly conical, apex rounded, 
suture profound; whorls six, strongly convex, last one rounded, one-third the length 
of the shell ; aperture rather small, vertical, nearly round; peristome obsoletely doubled, 
continuous, slightly adhering to the penultimate whorl and very slightly expanded. 
Length 54, diam. 3 mill. 
Hab.—TYahiti and Moorea Islands. 
