STREPTAXIS. 13 



Length of type 11, breadth Ng, height 5| mm. (Benson); a 

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

 5 mm. 



This is, I think, merely a variety of *S'. layanliamts. I have 

 seen intermediate forms with rudimentary palatal teeth. 



Huh. 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'. cinyaletisis. 



22. Streptaxis gracilis, CoUett, Proc Mai. Soc. in, 1898, p. 1. 



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

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

 scarcely projecting beyond the last \\horl when seen from below ; 

 last whorl convex beneath, slightly compressed around the 

 umbihcus : 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 tirst and second ; the formula is 25 . 1 . 25. The buccal 

 mass is as described by Stoliczka.] 



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



Hah. Near Lemastota, L'^va Province, Ceylon. 



23. Streptaxis lasvis, Blf. r. Z. S. 1809, p. 765, pi. 50, tigs. 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. 



Hah. 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 « hen 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 

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

 angle. 



Length 13;^, breadth 10, height 7 mm. 



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

 the exact locality. 



