124 Contributions to Indian Malacology. [No. 2, 



From A. strangulatus, the species is distinguished by its greater 

 size, more depressed form, more oblique aperture, by the recurvation 

 of the peristome at its junction witli the penultimate whorl, the longer 

 sutural tube, the greater distance of the ridge crossing the constric- 

 tion from the mouth, and the closer sculpture. From prosectus and 

 styhfer, the characters of the peristome, which is simple in stylifer 

 and expanded at the columella!* margin inprosectus, besides the smaller 

 size of A. expatriatus ; from hebes and gemmula the slightly prominent 

 ridge not recurved and the depressed form afford abundant grounds 

 for distinction. A. spiracellum of Borneo is probably closely al- 

 lied, but we are only acquainted with that shell by its description. 

 Judging therefrom A. expatriatus should be distinguished by its 

 smaller size, more narrow umbilicus, greater bluntness of the ridge in 

 the constriction, and in general by the greater length of the sutural 

 tube, a character which, however, is evidently, from its variability in 

 this species, of less value than has hitherto been supposed. 



The species occurred near the base of Neddoowuttom ghat, and a 

 little above the village of Goodaloor. The animal is small and 

 colourless ; the body very short ; the sole undivided ; tail short and 

 rather pointed ; tentacles short, yellowish ; muzzle blunt, not elongated. 



3.— DlPLOMMATINA NlLGIIUCA, U. S. 



Testa dextrorsa, imperforata, subovata, glabra, tenuis, nitida, cornea ; 

 spira conohlea, apice ohtusa ; anfr. 6 convexi, superne leniter crescentes, 

 ultinms parum augustior, antice ascendens, carina costiformi circa 

 umbilicum munitus; apertura subverticalis, circularis; perist. baud 

 dentatum, duplex ; externum breviter expansum, interruptum ; inter- 

 num mediocriter porrectum, continuum. Opere. corueum, subcirculare, 

 ad suturam angulatum, planum, baud spiratum. 



Long. 3 m. m. 



Diam. max., It ditto. 



Apert. diam., f ditto. 



Anfr. ultimi long.,. 1 ditto. 



Habitat in sylvis prope Pykara versus apices montiurn " Nilgai" 

 (ad alt. circa 7000 ped). 



This species is distinguished from all others of the genus yet 

 described by the ridge around the umbilicus, which is an exact coun- 



