346 



ACHATIXIDjE. 



The Beddome colleclion oontains four specimens, from the Naga 

 Hills, wliich have the followiug dimensions ; — 



1°. Length 64 mm., diam. 12 mm. (14 wliorls). 



2°. „ 74*5 mm., „ 12'5 mm. (14 wliorls, apex broken). 



3*^. ,, 74 mm., ,, 13-5 mm. (15 whorls). 



Tiie first shows the remains of an epiphragm and contained a 

 spherical calcareous egg 2-7 mm. in diameter; two of the shells 

 are provided with a thick callus on the parietal wall, one forming 

 a raised ridge. 



There are besides in the British Museum, from the Khasi Hills, 

 four specimens measuring 58 x 11 mm. 



306. Bacillum muspratti, sp. n. 



Shell elongate-turrite, solid, dull, closely and irregularly striated, 

 showing indistinct traces of spirals, covered with a deciduous straw- 



^w: 



\^^ 



JFig. 118. — Bacillum musj^ratii. 



coloured cuticle. Spire elongate with straight sides, suture rather 

 shallow, apex obtuse. Whorls 10^, flattened, increasing slowly at 

 first, then rather suddenly, the last whorl equalling about i of the 



