256 ZONITIDJE. 



oblique, reflected above into an angulate process that closes the 

 perforation. 



Major diam. 4|, min. 4, height 2| mm. 



Hab. Andaman Islands. 



This form is near M. rinki, from the Nicobars, but it is smaller, 

 rather thinner, more closely wound, and imperforate. The spiral 

 sculpture is less strong and less regular. 



[Named after General Sir Donald Stewart, at one time Governor 

 of the Andaman Islands. M. stuarti was adopted by Blanford in 

 error.] 



C. Species from Peninsular India and Ceylon. 



394. Microcystina bintennensis. 



Microcystina perfucata, var. bintennensis, Godwin-Austen, Mol. 



2nd. ii, 1899, p. 110, pi. 92, figs. 3-3 * (shell and anatomy). 

 Microcystina perfucata, s. ; Godwin?- Austen, t. c. p. 110, pi. 92, 



fig. 4 (columella of shell) : nee Helix perfucata, Bs. 

 [Ft&fig. 81, 0,01, p. 242.] 



Shell obtectly perforate, depressed, translucent, polished, very 

 finely, closely, and faintly spirally striated under the microscope, 

 most distinctly on the upper whorls, rich deep brown ; spire low, 

 convexly conoidal, apex obtuse, suture shallow; whorls 4|-5^, 

 convex, the last broader, rounded at the periphery, convex beneath" ; 

 aperture oblique, elliptically lunate ; peristome thin, in one plane, 

 columellar margin oblique, slightly curved, reflected and angulately 

 projecting above, partly covering the perforation. 



Major diam. 6^, min. 5|, height 3 mm. 



Hab. Ceylon, Bintenne (Collett) ; Badulla, 2000', Matale, 1800' 



(ColUtt)', Dumballa(C'oZktt)' 



In the animal the mucous gland is linear, with the end of the 

 foot projecting above it. Peripodial margin broad ; sole divided. 

 Eight shell-lobe present ; no left shell-lobe ; left dorsal lobe in two 

 separate flaps. Jaw with a large projection in the middle. Teeth 

 30 . 1 . 8 . 1 . 8 . 1 . 30 (39 . 1 . 39). Male organ a simple straight 

 sheath tapering above to the retractor muscle, and apparently 

 destitute of kale-sac. According to the figure the vas deferens 

 joins the penis on the distal side of the retractor muscle. [This 

 is only apparent ; the retractor muscle is very long and extends to 

 the junction of the vas deferens.] 



This cannot be the same as Macrochlamys perfucata, Bs., from 

 Galle, though the two were united by Godwin-Austen. Benson's 

 species has four closely-wound whorls, the aperture scarcely oblique, 

 and the columellar margin vertical. 



395. Microcystina shevaroyana, W. T. Blanford, P. Z. S. 1904, ii, 



p. 446, pi. 25, fig. 17. 



Shell rather openly and perviously perforate, conoidly depressed, 

 thin, translucent, amber-coloured, polished, with very minute, 

 close, and rather flexuous longitudinal (concentric) striation above 



