SIT.VLA. 



231 



The small projecting point of the reflected columellar margin of 

 the peristome tends to recall that in Mkrocystina. 



b. Columella strongly reflected, thickened, and twisted, 



344, Sitala? gratulator, Blf. (Nanina) /. A. S •^'- 1'^^' 2 p. 72 ; 

 Pfr. (Helix) Mun. Hel. v, 1868, p. 94; H. ^- T. (Helix) CI. 

 1876, pi. 10, fio-. 2: 2\'eviU, Nanina (Sitala), Hand-l. i, 18/8, 

 p. d;Godicin- Austen, Mol. Lid. i, 1832, p. 42, pi. 10, figs. 1, 1 a, 

 1 b (shell). 

 Shell perforate, trochiform, not very thin, obliquely striated and 

 ornamented with strong spiral (longitudinal) raised lines above 

 and more finely concentrically lined and radiately striate beneath, 

 pale brownish horny ; about 6 or 7 ribs on last whorl ; spire 

 conical, apex obtuse, suture impressed ; whorls 5|, slowly and 

 regularly increasing, convex, the last cariuate at the periphery, 

 flatly convex beneath ; aperture diagonal, subtrapezoidal, breadth 

 exceeding height ; peristome thin, margins united by a callus, basal 

 sinuate, columellar ^forming a right angle with basal,_ reflected and 

 thickened above and passing half round the perforation. 

 Maior diam. 5, min. 4-5, height 4 mm. 



Hah. Irrawady Yalley, Pegu. Common about Thayet Myo, also 

 at Akoulitoung and Henzada. 



The aniraafhas a small mucous pore at the posterior end ot the 

 foot, and a small lobe overhanging the mucous pore. The eye- 

 tentacles are long. These characters agree with those of S. mfula. 

 The very oblique mouth and twisted columella, however, may point 

 to generic diflerences. 



B. Small shells of douhtful affinity, all under 6 mm. in diameter. 



a. Carinate, suhperf orate or narroivly perforate. 



345. Sitala gromatica, Godicin-Ausfen, Mol.Ind.\,\SS2, p. 32, pi. 10, 

 fig, 5 (shell). 



Shell subperforate, pyramidal, trochiform, obliquely striated and 

 spirally ribbed, with about 10 fine, thread-like, subdistant raised 

 lines closer together below near the suture, umber-brown ; spire 

 conical, sides nearlv flat, suture shallow ; whorls 7, convex, the 

 last carinate at periphery, lower surface slightly convex, radiately 

 and concentrically striated; aperture oblique, subquadrately lunate; 

 peristome thin, columellar margin oblique, reflected. 



Major diam. 3^, height 3 mm. 



Hab. ]Manipvir, North Cachar, and Khasi Hills. 



346. Sitala haroldi, Godicin-Austen, Mol. Ind. i, 1882, p. 33, pi. 10, 



tig. 7 ^shell) ; id. t. c. ii, 1898, p. 47 ; id. P. Z. S. l&9o, p. 448. 



Shell "subperforate, trochiform, finely spirally lirate, about 10 



spiral lines on the lo\\er whorls, radiately and concentrically striate 



on the base, brownish horny; spire conical, sides flat, suture 



