so PROCEEDINGS OF THE MALA.COLOGICAL SOCIETY. 



onlumclla albca, paullum incrassata, dente suturali albo, nitido, 

 conspicuo. Long. 13, lat. 6 '5 mm. 



^«*.— Batticaloa, Cejlon (Captain W. A. Tindall). 



The only near ally of this species known to me is JV. Frederiei, 

 Melvill, from Karachi and the Mekran Coast, originally described as 

 JV. 7'ownsendi'^ a name subsequently found to have been already used 

 by Dall for a Mexican species. In JV. Frederiei the longitudinal 

 costse are far more frequent (say 26 on the body-whorl), and likewise 

 tliinner in texture. In both species the sutural tooth is conspicuous. 

 The whorls are pale ochreous or ashy-brown, spirally zoned once on 

 the upper ones only, just below the sutures, the body-whorl being 

 additionally centrally banded. The spiral sulci are deeply and clearly 

 cut, the costae being gemmulate between the points of crossing. 



Several examples were collected by Captain Tindall of the s.s. 

 " Patrick Stewart." 



Mem. Maucli. Soc, vol. xli (1897), pt. 3, No. vii, p. 1, pi. vi, fig. 1. 



