1875.] G. & H. Nevill — Descriptions of new Marine Mollusca. 85 



bright brown, with a broad white band at the upper part of the whorls, re- 

 peated near base of the last whorl, this white band is more vivid and dis- 

 tinct on the ribs than in the interstices ; whorls 8, the thi'ee first without 

 sculpture, the others longitudinally flexuously ribbed, with a depression be- 

 neath the suture, last whorl transversely ribbed at its base, with approxi- 

 mately 12 longitudinal ribs, two of which in the centre of the back are 

 joined together and have a varicose or gibbous appearance ; columella and 

 interior of aperture brown, smooth, outer lip sharp, very thin, sinus small. 



Long. max. Q\, diam. max. 1\ mil. 



Andaman I. and Ceylon, scarce at both places. We have given a fresh 

 figui'e of this species from an Andaman specimen, as the figure in the Don. 

 Bism. (pi. 1, fig. 1) is scarcely sufficient for satisfactory identification. 

 Typical specimens in the Indian Museum from the Sandwich Islands in no 

 respect differ from Indian Ocean ones. 



Mangelia fulvocincta, n. sp., PI. VII, Fig. 1. 



Shell attenuately fusiform, shining ; whorls nine, the first four embry- 

 onal and colourless, the third and fourth peculiarly and strongly carinate, the 

 other five longitudinally, varicosely ribbed, seven ribs on the last whorl ; 

 under a lens, minutely but regularly transversely striated, strise more or 

 less obsolete on the ribs ; white, with a chestnut-brown band immediately 

 under the suture, more vivid in the interstices than on the ribs themselves, 

 this brown band covers the columella and nearly the whole of the lower half 

 of the last whorl, is also very strongly marked on the lower portion of the 

 outer lip and within the aperture ; columella and outer lip smooth, sinus 

 obsolete, canal very short and truncate. 



Long. 8, diam. 3 mil. 



Type Bombay (Rev. S. B. Fairbank), also Ceylon (nobis), and Pooree 

 (H. H. Raban). 



(Coll. Indian Museum and H. Nevill.) 



Mangelia Fairbanki, n. sp., PI. VII, Fig. 2. 



Wc have long hesitated whether this shell should be distinguished 

 from Reeve's JBl. hexagonalis, the differences between our shell and the 

 figure in the Conch. Icon, seem however to necessitate it. M. FairbanM 

 can be distinguished by the more open canal, the five or six denti- 

 eulations within the acute outer lip, the sharp transverse stria?, equally 

 and strongly showing both on the ribs and in the interstices, the strise 

 distant from one another, only three on each whorl, the middle one 

 slightly the largest, imparting a somewhat angulate appearance to the 

 whorls ; the longitudinal ribs are thicker and more rounded than in Reeve's 

 figure ; the shell has 8 whorls, the two first embryonal, slightly mammillate ; 



