230 ZONITID^S. 



apex acute ; whorls 7|, the upper somewhat convex, the lower 

 flat, the last acutely keeled, slightly convex beneath ; aperture 

 oblique, subtrapezoidal ; peristome straight, thin, columellar margin 

 slightly oblique, triangularly reflected. 



Major diam. 10, min. 9, height 8 mm. 



Hob. Therapuin or Therapon Hill, Tenasserim Valley. 



Distinguished from all allied forms by the concave sides of the 

 spire and the strong spiral costulation. 



342. Sitala palmaria, Bs. (Helix) A. M. N. H. (3) xiii, 1864, p. 137 ; 



Pfr. Mon r HeL v, 1868, p. 75 ; H. $ T. (Helix) C. I. 1876, 

 pi. 30, figs. 5, 6; Godwin-Amten, Mol. Ind. i, 1882, p. 35, 

 pi. 10, fig. 3. 



Shell perforate, subturbinate, marked with spiral ridges, 5 or 6 

 on the lowest whorl, 4 on the next higher, and with fine oblique 

 regular raised lines above, smooth with radiating striae beneath, 

 whitish horny; spire conoid, wijth convex sides, apex obtuse, 

 smooth, suture impressed : whorls 5J, convex, the last carinate, 

 moderately convex beneath ; aperture oblique, angularly lunate ; 

 peristome thin, straight, columellar margin broadly expanded 

 above. 



Major diam. 7, min. 6|, height 5 mm. 



Hob. Nundydroog, in Mysore (Benson*), and Wynaad (Beddorne). 



The above is taken from a typical specimen fully grown received 

 from Benson. The original type had 6| whorls and 7 spiral ribs 

 and measured 8| x 8 x 6 mm. 



343. Sitala liricincta, Stoliczka (Conulema), J. A. S. B. 1871, 2, 



p. 241, pi. 18, fig. 10 j Pfr. (Helix) Man. Hel. vii, 1876, p. 104 ; 

 H. $ T. (Helix) C. L 1876, pi. 132, fig. 7; Nevill, Nanina 

 (Sitala), Hand-l i, 1878, p. 34 ; Godwin-Amten, Mol. Ind. i, 

 1882, p. 34. 



Shell subobtectly and minutely perforate, turbinate, spirally 

 lirate, with about 4 strong ribs on each whorl, 5 or 6 on the lowest 

 whorl, smoother on the base, with a few concentric raised lines 

 near the periphery, ochraceous horny ; spire conical, sides slightly 

 convex, apex obtuse, suture impressed ; whorls 6 J, convex, the 

 last with a sharp rib representing a keel, but not distinctly angu- 

 late, convex beneath ; aperture nearly vertical, almost semicircularly 

 lunate ; peristome thin, columellar margin slightly oblique, almost 

 vertical and reflected, with a slight projection in front of the 

 perforation. 



Major diam. 6, min. 5|, height 5 mm. (Stoliczka gives 

 6-4x6x5-8.) 



Hob. On the banks of the Ataran Biver, near Moulmein. 



Near S. palmaria, but the spiral ribs are more distant and 

 stronger, the last whorl is less distinctly keeled, the spire is higher, 

 and the whorls more numerous. The animal has not been examined 

 in either species. 



