32 LAND AND FRESHWATER 
rately lunate; height less than the breadth ; peristome simple, thin; 
margins distant, columellar vertical, slightly reflected above.” 
* Major diam. 5°75, minor diam, 5°33, axis 5°5 mm. 
RA 0°23, : 0-21, ,, 0°22 inch. 
“ Aperture 3 millim. broad, 2 high. 
“ Habitat. Akoutoung and banks of the Tsanda Khyoung, Hen- 
zadah district, Pegu. 
‘“‘ Kasily distinguished from N. confinis and NV. attegia by its 
smaller size and higher spire, from JV. arwv by the sides of the spire 
being straight and not concave, and from the Bengal JV. infula, Bens., 
by its sculptrue and its sharper keel.” 
The shell figured is one of the two typical specimens (No. 65) in 
Mr. W.T. Blanford’s collection. There are nine distinct spiral ribs, 
the two lowest close together, and these are in far stronger relief 
and more marked than in infula, and extend even to the base of 
the shell. 
Size: major diam. 4:8 mm., alt. axis 6-3 mm. 
j Only ich,) ”.,5 0°25 inch. 
For this form I retain the original specific name, as it seems to 
be a good and distinct local race, as nearly related by shell-character 
to attegia as it is to infula. 
Srrata conrinis, W. BIf. (Plate X. fig. 2.) 
Nanina confinis, J. A. 8. B. 1865, p. 71 (section T’rochomorpha) ; 
Pfr. Mon. Hel. vol. v. p. 83. 
Helix confinis, Conch. Ind. p. 64, pl. clix. fig. 8 (not good). 
Sitala confinis, Theob. Suppl. Cat. p. 20; Nev. Hand-l. 1878, p. 33. 
Original description :—“ Shell minutely perforated, trochiform, 
very thin, whitish horny, smooth, shining. Spire conical, apex 
slightly obtuse, suture scarcely impressed. Whorls 7, flatly convex, 
marked above with 4 or 5 spiral ribs and fine oblique lines of 
growth ; the last sharply keeled, flatly convex beneath, and very 
finely radiately striated. Aperture oblique, subrhomboidal, twice as 
broad as high; peristome thin, acute, straight, margins distant, 
columellar subvertical, briefly and triangularly reflexed. 
“ Major diam. 10°5, minor diam. 9°5, axis 7-0 mm. 
Ms 0-42, 95 0°38, ,, 0°28 inch. 
“ Aperture 5 mm. broad, 2°5 high. 
“© Habitat. Near Thayet Myo, on the borders of British Burma ; 
also near Ava. 
«A near ally of NV. arw, Bens., from Tenasserim, which, however, 
may easily be recognized by the concave sides of its spire. From 
other related species (as JV. infula, Bs., N. cacuminifera, Bs., and 
N. attegia, Bs.) N. confinis is distinguished by its sculpture.” 
The figure now given is from a specimen in Mr. W. T. Blanford’s 
collection. 
SITALA GROMATICA, n. sp. (Plate X. figs. 5, 5 a.) 
Locality. Munipur Hills (G.-A.). 
Shell pyramidal, sharply keeled, flat on base, scarcely perforate ; 
