438 Mr. R. J. L. Guppy on new Species of 
somewhat noticeable. Not less remarkable is the rarity of 
individuals—so much so that travellers may be pardoned for 
having doubted if land-shells exist in Trintdae The only 
exception is perhaps Stenogyra octona. Bulimus oblongus and 
Cyclotus translucidus, however, are rather abundant in some 
very restricted localities. A contrast to this is presented by 
the Antilles, where an hour’s ramble or a search amongst 
almost any group of balisiers or grove of trees is camenr 
rewarded by examples of the more abundant species. 
1. Sptraxis simplex, n. sp. 
Testa cylindrico-turrita, longitudinaliter sinuato plicata, lutescens, 
epidermide straminea induta; anfr. 8-9, vix convexi, ultimus 
longitudinem spire superans; sutura incisa; apertura ovato- 
oblonga; columella valde torta vel reflexiuscula, truncata; peri- 
stoma simplex, supra et in mediis partibus paulo prominens. 
Shell turrite, rather thin, longitudinally sinuate-plicate, 
whitish, covered with a light straw-coloured, somewhat shining 
epidermis; whorls 8-9, scarcely convex; aperture ovate-ob- 
long; peristome simple, prominent above, receding below. 
Var. «. Columella strongly twisted, broadly and obliquely 
truncate; aperture much dilated anteriorly. — | 
Var. 8. Larger, rimate; columella reflexed, scarcely truncate. 
Dimensions of three examples. 
«. Height 14 mill., greatest diam. 4, height of last whorl : 3, of apert. a 
12 3 
” ” ”? 9 ” ”? 2 ” 
B. +b 15 ” ” ” 6 oP ” 73 YP 45 
2. Stenogyra plicatella, n. sp. 
Bulimus octonoides, Guppy, non Adams. 
Testa subulata, elongato-cylindrica, subperforata, cornea, parum 
nitens, sinuato-striata; anfr. 8-9, lente accrescentes, convexius- 
culi, ultimus ventrosus ; sutura valida; apertura elongata, ovalis ; 
peristoma simplex, supra paulo sinuatum, marginibus callo tenui 
junctis; columella recta, super umbilicum late reflexa. 
a. Shell subulate, elongate-cylindrical, subperforate, horn- 
coloured, slightly shining, marked by numerous sinuate strie; 
whorls 8-9, slowly increasing, the last somewhat ventricose ; 
aperture elongate-oval; columella reflexed over the narrow 
perforation. 
B. Generally larger; whorls flattened, and impressed in the 
middle by an indistinct sulcus; the last whorl not ventricose ; 
outer margin sinuate above; aperture with its margins join 
by a callus. - ae 
y. Smaller, more slender, waxy-white, shining ; columella 
arcuate, not reflexed, sometimes subtruncate. . 
