6 TESTACELLID^E. 



convex, slightly flattened beneath, very little compressed at the 

 base ; aperture subtriangularly semi-oval ; peristome expanded, 

 deeply sinuate at the angle, the sinus sometimes terminating in a 

 small blunt tubercle on the parietal wall ; a single parietal lamella. 



Length 9|, breadth 7, height 5 mm. 



Hcib. The hills of Southern Ceylon. This passes into S. cin- 

 galensis, p. 12. 



D. Depressedly ovate ; the penultimate ivJiorl, seen from below, 

 just extends beyond body-whorl. 



6. Streptaxis burmanicus, Blf., Theobald, J. A. S. B. xxxiii, 1864, 



p. 245, pt. ; Blf. J. A. S. B. xxxiv, 1865, pp. 81, 105 ; Pfr. Mon. 



Hel v, 1868, p. 444 ; id. t. c. vii, 1876, p. 494 ; Stol J. A. S. B. xl, 



pt. 2, 1871, p. 113, pi. 7, figs. 5-7. 

 Streptaxis blanfordi, H. $ T. (nee Theobald) C. I. 1876, pi. 8, fig. 10 ; 



\Nev. Hand-l. i, 1878, p. 2 (Toungoop & Tounghu; small var. 



Rangoon, vide Stol. t. c. pi. 7, figs. 6, 7)]. 

 Streptaxis thebawi, Godwin- Austen, P. Z. S. 1888, p. 243. 



Shell umbilicated, finely, closely, and flexuously costulate above, 

 smooth beneath, whitish ; spire convex ; whorls 6-6^, slightly 

 convex above, the penultimate rounded at the periphery ; last 

 whorl much broader than the others, slightly flattened beneath, 



Fig. 5. Streptaxis burmanicus. 



very little compressed around the umbilicus. Aperture semi-oval, 

 parietal lamella well developed ; peristome white, expanded, outer 

 border boldly arcuate, and with sometimes a small tubercle or tooth 

 inside opposite the top of the parietal lamella. This tooth is often 

 wanting. 



Length 10, breadth 7|, height 6mm. ; of a smaller specimen 7J, 

 5f , and 4 ; of S. thebawi 10, 7, and 6. 



Hob. Arrakan and Pegu ; S. thebawi from Pingoung, Shan 

 Hills, Upper Burma. 



7. Streptaxis pfeifferi, Zelebor, Verh. zool-bot. Ges. Wien, xvii, 

 1867, p. 806 ; Pfr. Mon. Hel. v, 1868, p. 444 ; id. t. c. vii, 1876, 

 p. 495 ; Godwin-Austen, P. Z. S. 1895, p. 443. 



Streptaxis pfeifferianus, Stol. J. A. S. B. xl, pt. 2, 1871, pi. 8, fig. 6 

 (animal) ; Nev. Hand-l. i, 1878, p. 2. 



Var. minor, March, Jour, de Conch. Oct. 1876, p. 359. Kar Nicobar. 



Var. pumilio, Morch, t. c. Oct. 1876, p. 359. Ivamorta. 



Similar to S. burmanicus, but with half a whorl less ; the 



