232 



shallow; whorls 7, slightly convex, the last carinate; nearly flat 

 beneath ; aperture oblique, subrhoinboidal ; peristonie thin, colu- 

 niellar margin oblique, forming an angle with basal. 



Diam. 3|, height 3 mm. 



Hob. Andaman Islands ; South Andaman and Little Brother 

 Island ; also said to have been found on Katchall in the Nicobars. 



A small distinctly trochiform shell with fine spiral sculpture. 



[This is the species unnamed, Nanina (Microcystis), No. 200, 

 p. 41, Nevill, Hand-1. i, and probably No. 208, p. 42.] 



347. Sitala? phyllophila, s. (Helix) A. M. N. If. (3) xi, 1863, 



p. 320; Pfr. (Helix) Mon. Hel v, 1868, p. 86 ; H. $ T. (Helix) 

 C. L 1876, pi. 61, fig. 10 ; Nevill, Nanina (Microcystis), Hand-L 

 i, 1878, p. 41. 



" Shell scarcely perforate, trochiform, thin, silky above, obliquely 

 striated, polished beneath, under the microscope ornamented, both 

 above and below, with minute, close, undulating spiral striation,. 

 translucent, pale horny ; spire conical, apex rather sharp, suture 

 somewhat impressed ; whorls 6|, convex, the last carinate ; aper- 

 ture oblique, subquadrately lunate; peristome simple, straight, 

 sharp, columellar margin vertical, reflected, broader above, partly 

 covering the perforation. 



" Major diam. 5, min. 4|, axis 5 mm." (Benson, in Latin.) 



Hob. Badulla and Kandy, Ceylon. 



This is near S. infula, but distinguished by the closely-set 

 undulate striae instead of subremote spiral lines. 



348. Sitala? pyramidalis, Sykes, Proc. Mai Soc. iii, 1898, p. 70, 



pi. 5, figs. 19, 20. 



"Shell narrowly but perspective!}" umbilicated, small, depressedly 

 pyramidal, pale horny, slightly covered with an epidermis, apex 

 rather obtuse ; whorls 7, plano-convex, the first smooth, the others 

 spirally ribbed, the last with 4 to 6 ribs, keeled at the periphery, 

 convex at the base, radiately striated, smooth ; suture impressed, 

 aperture angularly lunate ; peristome simple, straight. 



" Diam. 5, height 3*4 mm." (SyJces, in Latin.) 



Hob. Lower Ambagamuwa, Ceylon (Collett). 



349. Sitala ? operiens, Sykes. Proc. Mai. Soc. iii, 1898, p. 70, pi. 5, 



fig. 12. 



Shell narrowly perforate, very small, elevately conoid, brownish 

 horny, covered with a brown epidermis, apex rather acute ; 

 whorls 6, beneath the epidermis microscopically engraved with 

 numerous spiral lines, the last keeled at the periphery, subconvex 

 at the base, radiately striated, smooth ; suture subimpressed ;. 

 aperture ovately lunate ; peristome simple, straight, columellar 

 margin slightly reflected at the perforation. 



" Diam. 2-5, height 2-5 mm." (Sylces, in Latin.) 



Hob. Uva Pussellawa, Ceylon (H. Preston}. 



