STREPTAXIS. 



Hel V, 1868, p. 151 ; Stol. (Streptaxis) J. A. S. B. xl, pt. 2, 1871, 

 p. 167 ; Theob. J. A. S. B. xlv, pt. 2, 1876, p. 180, pi. 14, fig. G; 

 H. ii- T. (Helix) C. I. 1876, p. 15, pi. 31, figs. 1, 4 (immature 

 shell); id. (Streptaxis) t. c. 1876, p. 03, pi. 156, fig. 9; Nev. 

 Hand-l. i, 1878, p. 3. 



Similar to *S'. petlti, but larger and longer in proportion to the 

 breadth, with the penultimate whorl much deeper and rounded at 

 the periphery ; last whori subangulately compressed at the base 

 behind the peristome, right margin of peristome but shghtly 

 arcuate. 



Length 15, breadth 9-5, height 'S-b nun. ; of a similar form 12, 8, 

 and 7'5 mm. 



Hah. Moulmein. Some of the immature specimens originally 

 called Ileliv homhax were from Phietan, Tenasserim. 



3. Streptaxis andamaniciis, Bs. A. M. X. II. (3) vi, 1860, p. 192 ; 



Ffr. Mon. llel. v, 1868, p. 444; H. 4" T. C. I. 1876, pi. 8, f. 6; 

 Nev. Hand-l. i, 1878, p.^2 ; [^Godwin- Austen, P. Z. 8. 1895, p. 443]. 



Shell umbilicated, with arcuate costulate striation above, smooth 

 beneath ; whorls 5|, convex above, the penultimate rounded ; 

 breadth across body-whorl scarcely greater than across penultimate 

 whorl when viewed from below, and last whorl rounded, not com- 

 pressed, around the umbilicus ; aperture a truncated oval, slightly 

 compressed on the outer edge ; peristome white, expanded, the 

 outer border arcuate. 



Length .S, breadth 5^, height 4 mm. 



Hub. Andaman Islands. 



4. Streptaxis blaufordi, Tkeob. J. A. S. B. xxxiii, 1864, p. 245; Neo. 



Hand-l i, 1878, p. 2 (Arakau i\: Pegu). 

 Streptaxis blanfordiauus, Stol. J. A. S. B. xl, pt. 2, 1871, p. 163, 



pi. 7 [fig. 8 (Arakan), fig. 9 (Pegu)] ; Pfr. Mon. Hel. vii, 1876, 



p. 494. 

 Streptaxis burmauica, H. ^- T. {iiec Blanford) C. I. 1876, pi. 8, fi^. 5. 

 [Streptaxis blanfordi, var., Godtvin-Austen, P. Z. S. 1895, p. 443.J 



Very near S. andamaaiciis, but rather more narrowly umbili- 

 cated, slightly compressed around the umbilicus, and usually with 

 a distinct tubercle inside the outer border of the peristome, the 

 outer margin of which is less arcuate. 



Length 1 h, breadth 5, height scarcely 4 mm. 



This ap[)ears to be merely a variety of IS. aadamanicus. 



Hub. Arrakan, Pegu, Shan States ; Cocos Islands. 



5. Streptaxis layardianus, Bs. A. M. N. H. (2) xii, 1853, p. 90; 



Pfr. Mon. HI. iv, 1859. p. 332 ; id. t. c. vii, 1876, p. 495 ; H. ^- T. 

 C. I. 1876, pi. 98, figs. 1, 4 ; [Xei: Hand-l. i, 1878, p. 4]. 



Shell perforate, sub umbilicated, striated, whitish ; spire low, 

 convex ; whorls 0], convex above, penultimate rounded, the last 



