SIXALA. 229 



It is also curious to tiud that this radula is ahuost the counter- 

 part of Sitala atteijia, as described by Stohczka {vide J. A. S. B. 

 vol. xl, 1871, pt. 2, p. 2'38), but Stoliczka's Hgures of the teeth of 

 this genus are very misleading.] 



339. Sitala culmen, J](f. (Nanina) J. A. S. B. 1805, 2, p. 72 : Pfr. 



(Ilehx) Moll. Hei.T, 1868, p. 94. : Godivin- Austen, Mol. Lid. i, 

 1882, p. 31, pi. 8, fig. 4 (shell). 



Shell very minutely perforate, trochiform, thin, pale brownish 

 horny, translucent, obliquely striated, and with fine raised, rather 

 distant, spiral lines, closer together near the base of each whorl ; 

 8 or 9 may be counted on the lo\\er whorls, some stronger than 

 others ; spire conical, apex obtuse, suture impressed ; whorls 6, 

 convex, the last sharply keeled at the periphery, slightly convex 

 beneath, marked with radiating strise and fine concentric impressed 

 lines ; aperture slightly oblique, subquadrately lunate ; peristome 

 simple, thin, columellar margin vertical, triangularly reflected. 



Major diam. 5|, min. 5^, height ok mm. 



Hah. Pegu, Akouktoung on Irrawady Eiver, and banks of 

 Hsanda Hyoung, west of Henzada. 



Stoliezka referred this shell to S.attegia, and Nevillto S.infula. 

 It is distinguished, however, both by smaller size, higher spire, 

 and stronger sculpture. 



340. Sitala confinis, Blf. (Xaniua) /. A. S. B. I860, 2, p. 71 : -^V. 



(Helix) Mon. Hel. v, 1868, p. 83; H. S)- T. (Hehx) C. I. 1876, 

 pi. 159, tig. 8 ; Godtcin- Austen, Mol. Lid. i, 1882, p. 32, pi. 10, 

 tig. 2 (shell). 



Shell narrowly perforate, subtrochiform, thin, marked with 3 to 

 4 distant spiral ribs on each, \\horl, and obliquely striated, whitish 

 horny ; spire conical, with the sides flat, apex slightly obtuse,, 

 suture impressed. Whorls 7-7^, the upper slightly convex, the 

 lower nearly flat, last whorl sharply keeled, convex beneath, and 

 finely radiately striated ; aperture slightly oblique, subquadrately 

 lunate : peristome thin, straight, columellar margin subvertical, 

 triangularly reflexed. 



Major diam. lOi, min. 94, height 9 mm. 



H(d>. Thayet Myo and Ava ; Burma. 



From infuJa, attegia, and culiuen this species is distinguished by 

 stronger sculpture, and from aiw by the sides of the spire being 

 straight, not concave. 



341. Sitala arx, Bs. (Helix) .4. .1/. X. H. (3) iii, 1859, p. 184: Theob. 



(Helix) J. A. S. B. 1857, p. 250 ; Pfr. (Helix) 3Ion. Hel. v,. 

 1868, p. 90 ; H. 4- T. (HeUx) C. /. 1876, pi. 54, tig. 8. 



Shell narrowly perforate, conical, thin, faintly obliquely striated, 

 and each whorl surrounded by about 4 strong, raised, thread-like 

 ribs, smooth beneath, translucent, pale brownish horny ; spire 

 conoidal, the sides considerably concave, suture scarcely impressed^ 



