248 ZONITID^. 



in height, the sides shghtly convex, apex rather obtuse, suture 

 shghtly impressed, distinctly inarginate ; whorls 7, increasing 

 slowly, convex, the last not descending, sbarply and filiformly 

 keeled, moderately convex below the keel, impressed in the 

 umbilical I'egion, raised into a slightly compressed longitudinal 

 ridge, with a hollow outside it near the basal margin of the peri- 

 stome ; aperture oblique, trapezoidal, with three palatal teeth, the 

 inner subcolumellar, small and conical, the outer lamellar, entering 

 deeply and curved, the portion near the peristome and the inner- 

 most portion higher in general than the intervening part ; peristome 

 white, obtuse, sharply angulate at the periphery and less sharply 

 in the middle of the arcuate basal margin, columellar margin 

 straight, oblique. 



Major diam. 65, min. 5|, axis 5 mm. 



Hah. Dafla Hills and Hill-ranges south of Assam at low eleva- 

 tions, Chittagong. 



The relative distribution of this and of the next two species is 

 not well known, but one or the other is found from Assam and 

 Yunnan to Pegu, the Little Cocos Is., and Preparis. 



The shell varies in size and in the height of the spire. 



37s. Sesara ? harmeri, Gude, Jour. Mai. vii, 1900, p. 139, figs. 1, 2. 



Similar to S. ? diplodon, but distinguished by having the basal 

 surface simply convex behind the aperture, not pinclied up iuto a 

 ridge in the middle, and hollow near the periphery ; also in having 

 the outer palatal tooth much shorter and simple, without the inner 

 raised portion. 



[Major diam. 6'75, min. 6"25, alt. 5 mm., of shell described.] 



Hah. Ivhasi Hills. 



379. Sesara ? ingrami, Bif. (Helix) H. 4- T. C. I. 1876, pi. CO, figs. 9, 

 10; Blf. J. A. S. B. 1880, p. 193. 

 Nanina (Sesara) diplodon, Nevill, Hand-l. i, 1878, p. 53, pt. 



Very similar to S. ? diplodon, but imperforate and with three 

 palatal teeth, all lamellar. Two are close to the peristome, tliat 

 on the columellar side is small and runs obliquely inwards ; the 

 outer is in the middle of the basal margin, where it begins as a 

 thickening inside the lip, then it is sharply curved and passes 

 towards the interior of the whorls ; the third is behind the second, 

 it is curved and transversely placed at some distance within the 

 aperture ; all are visible through the shell beneath. 



Major diam. 6^, min. 6, alt. 4| mm. 



Hah. Arakan Eange and probably Pegu. 



The animal has a small mucous pore with a small lobe above it, 

 not quite at the end of the foot, which is flattened posterioi'ly. 



