TROCHOMORPHA. 127 



Alt. 31-31, diam. 7-71 mill.; apert., alt. 2*, width 3i mill. 



Gunung Gedeh, Java. 



T. concolor BTTG., Ber. Senck. naturf. Ges. 1890, p. 143, t. 5, f. 15, 

 6a-c. 



This unicolored, comparatively small Videna also seems to be 

 higher than all of its Javanese allies (proportion 1 : 1*90). The 

 nearest species to it may be T. lardea v. Mts. of Java and the 

 Moluccas; but this has the proportion 1:2'55, and a white thick- 

 ened lip. (Bttg.) 



T. SUBNIGRITELLA Beddome. PI. 43, figs. 44, 45, 46. 



Shell moderately umbilicated, depressedly turbinate, quite rounded 

 at the apex ; whorls 6, very gradually increasing, faintly striated, 

 the last sharply angled at the periphery, nearly flat on the under 

 side ; aperture oblique, subquadrate ; peristome simple, the margins 

 distant ; color a rich dark brown, shining below. 



Diameter i inch, height f inch. (Beddome.) 



Andaman Is. (Hungerford.) 



Trochomorpha subnigritella BEDD., P. Z. S. 1891, p. 314, t. 29, 

 figs. 4, 5, 6. 



This species recalls the Pacific forms of the genus rather than the 

 Indian ones, its nearest ally being T. nigritella, which, however, is a 

 larger shell with the last whorl much broader. Type in the Natural 

 History Museum. (Beddome.') 



T. KANTAVUENSIS Garrett. PL 20, figs. 25, 26, 27. 



Shell widely umbilicated, thin, fragile, pellucid, depressed, lentic- 

 ular, smooth, shining; incremental striae fine, crowded, oblique; 

 luteous-corneous, the periphery margined above and beneath with a 

 reddish-chestnut line, the upper one following the whorls of the 

 spire ; suture with a depressed, narrow marginal line ; whorls 6, 

 slightly convex, rather rapidly increasing, last one not descending 

 in front, acute and compressedly carinated, keel whitish ; base more 

 polished than above, convex ; aperture very oblique, depressed, sub- 

 rhomboid-lunate ; peristome thin, straight above, margins converg- 

 ing, basal portion slightly thickened and gently arched. (Garrett.') 



Alt. 7, diam. 20 mill. 



I received several hundred examples of this very distinct species 

 from a missionary who collected them in Kantavu Island. He 



