468 Records of the Indian Museum. [Vol. XXII, 



swamps at Belawan (Deli) and on the sea-shore at Perbaoengen 

 (Serdang). Two of the specimens resemble fig. 7 of v. Martens, 

 and one is like his fig. 11. 



Auricula limnaeiformis, Annandale (sp. nov.). 



(Plate xiv, figs, i, 2). 



Shell of moderate size, imperforate, very thin, spindle-shaped, 

 acuminate, with the anterior extremity bluntly pointed if examined 

 microscopically ; the greatest diameter about ^ the height. Su- 

 ture somewhat impressed, hardlj^ oblique. Spire rather narrowly 

 conical, J- the length of the body- whorl, with seven complete whorls ; 

 its whorls not at all swollen, increasing gradually and evenly. 

 Body-whorl triangular, very little swollen, almost bilaterally- 

 symmetrical. Mouth long and narrow, sharply pointed posteriorly 

 and bluntly pointed anteriorly; its main axis forming an acute 

 angle with that of the shell; outer lip thin; columellar and parie- 

 tal teeth rather feebly developed. Periostracum thin, bright 

 olive-green, rather dull. Longitudinal sculpture obscure, irregular, 

 spiral sculpture on the spire consisting of numerous guttate lines 

 confined to the upper half of each whorl ; similar lines covering 

 the whole of the body-whorl but much stronger over the posterior 

 region than over the greater part of its area. On this posterior 

 region irregular longitudinal branching ridges can also be detected 

 with the aid of a hand lens. 



Measurements of shells (in millimetres). 



The two shells of this interesting species were obtained by 

 Mr. den Doop at Perbaoengan (Serdang). 



The shell of this species is remarkable for its thinness and for 

 the absence of any thickening of the lip. It is somewhat Linmaea- 

 like in appearance. Nothing is known about its anatomy. 



Auricula percha, Annandale (sp. nov.). 



(Plate xiv, figs. 3, 4). 



Shell of fair size, spindle-shaped, imperforate, moderately 

 thin, slightly corroded at the posterior extremity but apparently 

 blunt, with the anterior extremity bluntly pointed ; the greatest 

 diameter about \ the height. Five and a half whorls in all. 

 Suture not impressed and slightly oblique. Spire broadly connoi- 

 dal, contained about 3I times in the body-whorl ; last whorl as 

 high as the first two taken together. Body-whorl long, narrow 

 and ovoid, not at all swollen, bluntly ]3ointed anteriorly, bilater- 

 ally asymmetrical. :\Iouth long and narrow, sharply pointed pos- 



