MOLLUSCA OF INDIA. 185 
this species is referred to as follows :—‘“‘ 4. D. ewilis, Blf., was found 
on the lmestone hills at Damotha and at the Farm-Caves near 
Moulmain. Most of the specimens somewhat exceed in size those 
from Upper Burmah; the costulation of the whorls also is a shade 
finer, though variable in different specimens, and the outer lip of 
the aperture a little more expanded ; however, the general form, 
character, and proportion of the whorls is exactly the same. One 
of the largest specimens measures: total length 3:2, diameter of 
penult. whorl] 1:0, diam. of apert. with perist. 0°9 mm.; it has nine 
whorls.” 
DIPLOMMATINA EDENTULA, N. sp. (Plate XLIX. figs. 7, 7 a.) 
Locality. Moulmain (7'heobald). 
Shell ovately fusiform, not rimate, thin ; sculpture minute, longi- 
tudinal strive, crossed by distant strong costulation ; colour whitish 
ochre; spire turreted, sides convex, apex rounded ; suture moderately 
impressed ; whorls 7, regularly increasing, the antepenultimate slightly 
the largest, the constriction above the aperture ; aperture vertical, 
circular ; peristome double, but not strongly developed ; columellar 
tooth very small. 
Size: major diam. 1°3, alt. axis 2°0 mm. 
M 0-04—"*./. ‘10:08 inch: 
This is another of the small, toothed, dextral forms from this lo- 
cality, and it cannot be for a moment confused with D. ewserta ; it 
may possibly be the shell referred to D. polypleuris and said to have 
been found near Moulmain. 
DIPLOMMATINA NICOBARICA, n. sp. (Plate XLVI. figs. 7, 7 a.) 
Locality. Nicobars (H. Godwin-Austen). 
Shell dextral, fusiform, not rimate; sculpture very close regular 
costulation ; colour pale brown; spire, sides rather flattened, apex 
acuminate ; whorls 7, sides convex, the antepenultimate the broadest, 
the constriction usually immediately above the aperture, but in some 
inclining more to the outer margin ; aperture circular, suboblique ; 
peristome closely double; columellar margin straight, only a slight 
indication of the usual tooth, but the thread or twist of the columella 
is visible within the aperture. 
Alt. axis 4:3 mm. 
i O-17 inch. 
This species was sent me by my brother with numerous other 
shells ; the absence of the usual columellar tooth is a conspicuous 
difference ; it is the first species described from these islands. I 
note, however, in Nevill’s ‘ Hand-list,’ p. 284, that a species very 
similar to D. carneola was found by Stoliczka on Batti Malve, and 
also on Katchall Islands. 
