188 PROCEEDINGS OF THE ACADEMY OF [Feb. 



NEW SPECIES OF MOLLUSKS FROM SOUTH AFRICA AND BURMA. 

 BY HENRY A. PILSBRY. 



The Academy has received from the Rev. H. W. Winkley good 

 series of an Ampullaria and a Vivipara from Henzada, Burma, 

 which though without striking features do not seem referable to 

 any of the numerous described species. 1 



Vivipara henzadensis n. sp. PI. V, fig. l. 



Shell umbilicate, broadly ovate-conic; olive-green with some 

 narrow slightly darker streaks; surface glossy and smooth, under 

 a lens showing fine, delicate and spaced spiral striae, which become 

 crowded and somewhat granulose on the base. Spire short, obtuse, 

 the earlier whorls eroded, the eroded portion reddish, tipped with 

 black. Sutures deeply impressed, the whorls strongly swollen just 

 below them; last whorl angular at the periphery in front, the 

 angle disappearing on the last half whorl, which is rounded; 

 umbilicus narrow, excavated behind the columellar lip, sur- 

 rounded by an angle. Aperture oblique, rounded-ovate, bluish 

 white inside; peristome narrowly expanded at the edge, blunt, 

 black, with a blackish border inside and out; continuous across the 

 parietal margin. 



Alt. 23, diam. 16|-17 mm. 



Operculum chestnut-brown and slightly wrinkled outside, with a 

 conspicuous raised or reflexed cuticular border; inside with a con- 

 spicuously raised and minutely roughened ovate area nearer the 

 columellar side, radiating strise on. the outside of this area, and a 

 raised border all around. 



This species closely resembles the African V. helidformis Ffld. 

 in form and color. It belongs, however, to a group of south- 



1 From Cochin China and neighboring countries Fischer enumerates no 

 less than fifteen species of Ampullaria and thirty-eight of Paludina, in his 

 useful Catalogue et Distribution Geographique des Moll. terr. , fluv. et 

 marins d'une partie de I'Indo-Chine (Autun, 1891). To this number a 

 few additions have been made since the publication of that catalogue. 



