SITALA. 233 



" The sculpture is not visible until the periostracuin has been 

 rubbed off." 



b. Carinate and umbilicated. 



350. Sitala? balliana, Godivin-Austen (Nevill, MS.}, Mol. Ind. i, 



1882, p. 74, pi. 15, fig. 2 (shell) ; ii, 1898, p. 48. 



Shell umbilicated, trochiforrn, obliquely, finely, regularly striated, 

 spirally costulate, with 4 to 5 strong ribs on each whorl, umber- 

 brown ; spire conical, not high, apex blunt, sides slightly convex, 

 suture impressed ; whorls 5, convex, the last w r ith a raised keel, 

 slightly convex beneath ; aperture subquadraugular, oblique ; peri- 

 stome slightly thickened, coluniellar margin oblique, becoming 

 vertical above, slightly reflected. 



Diam. 3J, height 2| mm. 



Hob. Hills near Ganjam, Madras Presidency (Ball). 



[This is No. 193, Nanina (Microcystis), n. sp., Nev. Hand-1. i, 

 1878, p. 41, type.] 



c. Hounded or subangulate. 



351. Sitala? phulongensis, Godwin-Austen, Mol Ind. i, 1882, p. 34, 



pi. 10, fig. 4 (shell) ; id. ii, 1898, p. 48. 



Shell narrowly perforate, elongatelv conical, subturreted, spirally 

 lirate, with 6 to 7 longitudinal ribs on each whorl, obliquely 

 striated, with radiating and close concentric stria tion on the base, 

 brownish horny ; spire rather high, conical, sides slightly convex, 

 suture impressed ; whorls 5|, convex, the last not distinctly 

 carinate, convex beneath ; aperture oblique, almost semicircular ; 

 peristome thin, columellar margin vertical, slightly reflected. 



Diam. 2, height 2'25 mm. 



Hob. Khasi Hills, Cherra Pungi, and Phulong. 



This is higher in the spire than most of its allies. The lingual 

 ribbon resembles that of Durgella ; it has a minute rhachidian tooth 

 and a great number of multicuspid laterals, all similar ; the jaw> 

 too, is almost straight. 



[$. infula and attegia approach Durgella in the form of the lateral 

 teeth, only they have from 7 to 5 central teeth on broad plates.] 



352. Sitala ? limata, Godwin-Austen, Mol. Ind. i, 1882, p. 34, pi. 10, 



fig. 9 (shell). 



Shell subperf orate, elongately subtrochiform, finely spirally 

 lirate, having about 6 longitudinal ribs on last whorl, closely 

 concentrically striated on base, brownish horny ; spire conical, 

 sides convex, apex blunt, suture slightly impressed ; whorls 5, 

 convex, the last not carinate, convex beneath ; aperture vertical, 

 subquadrately semicircular; peristome thin, columellar margin 

 vertical, slightly thickened and reflected. 



Major diam. 1|, height 1| mm. 



Hob. Thamandeva, base of Arakan Eange, Bassein District, Pegu. 

 (W. T. Blanford). 



