1908.] Records of the Indian Museum. 201 



Gihbula ahena, sp. nov. 



Shell turbinate^ conical, angled at the periphery, dark bronze 

 colour, painted with oblique, transverse, thin, yellowish white lines, 

 a row of cream-coloured spots encircling the umbilical area ; whorls 

 4, finely, spirally striate above; base of shell bearing several 

 spiral lirse which are crossed by fine, transverse striae ; sutures 

 impressed ; umbilicus deep and fairly wide ; columella arched ; 

 peristome simple; aperture sub-ovate; operculum horn}^, multi- 

 spiral, with a central nucleus. 



Altitude 





. . 4-5 mm. 



Diam., major 





•• 3-5 M 



Aperture, alt. 





••2 



,, diam. 





• 1-5 ,, 



Habitat— Off Port 



Blan-, 



Andaman Islands 



fathoms. 







-10 



Allied to G. phcBdra, Melvill, from the Mekran Coast; the spire 



is, however, more obtuse and the sculpture coarser below and 



finer above ; the whorls are also more convex than is the case in 



G. phcedra. . 



Gibhula ccem, sp. nov. 



Shell perforate, turbinately conical, yellowish grey; whorls 

 5, shouldered above, flattish below, sculptured with coarse spiral 

 lirse crossed by transverse striae, presenting a cancellate appearance ; 

 sutures not very well defined; umbilicus rather broad, deep; 

 aperture sub-circular; edge of peristome acute, a thickening appear- 

 ing just within the aperture. 



Altitude 



. 



. 3-50 mm. 



Diam., major . . 





• 3-25 ,, 



Aperture, alt. . . 





• 1-25 ,, 



,, diam. 





..I 



Habitat— Off Port 



Blair, 



Andaman Islands 



fathoms. 







7 — 10 



Margarita ponsonhyi, sp. nov. 



Shell small, globosely depressed, pale greenish, iridescent, 

 white, painted with oblique, interrupted bands of dark green ; 

 whorls 4, very finely, spirally striate, and transversely marked 

 with lines of growth ; sutures impressed ; umbilicus narrow, 

 partly concealed by the projection of the columella ; columella 

 arched ; peristome acute , aperture almost circular. 



Altitude . . . . 3 '5 mm. 



Diam., major .. .. 4*25 ,, 



Aperture, alt. .. .. 2*25 ,, 



,, diam. . . 2 ,, 



Habitat — Off Port Blair, Andaman Islands, 7 — 10 

 fathoms. . . 



