STBEPTAXIS. 13 



Length of type 11, breadth 8g, height 5f mm. (Benson); a 

 typical specimen lent to me by Mr. Layard measures 10, 7j, and 

 5 mm. 



This is, I think, merely a variety of S. layardianus. I have 

 seen intermediate forms with rudimentary palatal teeth. 



Hab. Hewagam Korale, S.W. Ceylon. 



A small shell measuring 5| x 4 x 3 from Ohiya, Ceylon, 6000', is 

 in Mr. Sykes's collection. It is a miniature of S. cingalensis. 



22. Streptaxis gracilis, Collett, Proc. Mai. Soc. iii, 1898, p. 1. 



Shell subperforate, depressed, smooth, whitish ; spire low ; 

 whorls 4J-5, convex above; the penultimate rounded behind, 

 scarcely projecting beyond the last whorl when seen from below ; 

 last whorl convex beneath, slightly compressed around the 

 umbilicus ; aperture semioval ; peristome slightly expanded, white, 

 cut back into a rather deep sinus at the angle ; a single parietal 

 lamella, and one palatal tooth at the base of the columellar 

 margin. 



[The radula is very long ; the teeth are similar to those of 

 S. pfeifferi, only the centre tooth is rather longer in proportion 

 to the first and second ; the formula is 25 . 1 . 25. The buccal 

 mass is as described by Stoliczka.] 



Length 4|, breadth 3|, depth 2| mm. 



Hab. Near Lemastota, Uva Province, Ceylon. 



23. Streptaxis laevis, Blf. P. Z. S. 1899, p. 765, pi. 50, figs. 11, 12. 



Similar to S. burmanicus (p. 6), but smooth and finely striated, 

 not costulate above, and with a minute basal tooth inside the 

 peristome in all (3) specimens examined ; in one specimen there 

 are two teeth. 



Hab. Burma (Beddome). 



24. Streptaxis ravanae, Blf. P. Z. S. 1899, p. 768, pi. 50, figs. 13, 14, 15. 



Shell rimate, minutely perforate, striated ; spire low, convex ; 

 whorls 7, flattened above, penultimate rounded, only just pro- 

 jecting beyond the body-whorl when seen from below ; last whorl 

 flattened beneath, compressed anteriorly around the umbilicus ; 

 aperture semioval, with one parietal plait and 4 (or 5) palatal 

 teeth, two on the right margin, one distal and one near the base 

 of the columellar border, with a second rudimentary tooth higher 

 up ; peristome expanded, cut back into a moderate sinus at the 

 angle. 



Length 13 J, breadth 10, height 7 mm. 



Hab. Ceylon. I have long had a specimen, but do not know 

 the exact locality. 



