316 TROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



inside ; lip white, a trifle curved, thickened, slightly crenulate within, 

 the black lines coming almost to the edge, but not appearing in front. 



Long. 9-5 mm. ; diam. max. 5 mm. 



Hal. — "West Africa (Keppel). 



In colour pattern this very pretty shell recalls both M. Bellii, Sby., 

 and M. musica, Hinds, since it has the longitudinal colour-marking of 

 the former and spirals, though much narrower and more numerous, 

 similarly placed to those of the latter. It is, however, a much smaller 

 shell than either. In shape it reminds one of M. Guillani, Petit, but 

 differs in colour pattern and in the more curved outer lip. 



Marginella repentina, n.sp. PI. XVII, Fig. 6. 



Shell elongate-ovate, pellucid, thin, shining, the protoconch tinged 

 with pink, the other early whorls whitish, the last whorl with a light 

 red zone below the suture, but otherwise a darker i"ed, the colour more 

 intense at the periphery and behind the lip ; spire but little raised ; 

 protoconch blunt ; whorls 4, flattened, but with a well-marked suture ; 

 mouth gradually broadening towards the base, outer lip smooth inside ; 

 columella four-plaited ; lip moderately thickened. 



Long. 3 mm. ; diam. max. 1*5 mm. 



Hah. — Mayotte (Tripe Collection). 



Apparently closely related to M. Nevilli, Jouss. {M. inconspicua, 

 Nevill, non ISby.), but dilfers in colour, being red in place of a uniform 

 white ; the present species is also a little smaller ; the spire is not 

 deformed to one side, and is slightly more pyramidal in shape. 

 Marginella BmoxAXA, n.sp. PI. XVII, Fig. 5. 



Shell ovate-oblong, polished, shining, transparent whitish, with on 

 the last whorl two greyish-black bands encircling the shell, one of 

 which is seen on the earlier whorls ; protoconch white, tipped with 

 brownish-grey ; the above-mentioned colour-bands are produced on to 

 and well marked on the lip, while there is a dark mark both at the 

 junction of the upper canal with the shell and on the columella at the 

 base ; spire well elevated ; protoconch blunt ; whorls 41, flattened ; 

 aperture elongate, moderate in size, with the outer lip well incrassated, 

 denticulate within, the upper denticle the largest; columella four- 

 plaited. 



Long. 3 mm. ; diam. max. 1 -3 mm. 



]jah. — Indian Ocean (? Ceylon, Xevill Collection). 



I would not have described this shell, from H. Xevill's collection, 

 without being certain of the exact habitat, were it not for its rather 

 striking colour-markings, which do not tally with those of any form 

 known to me. I have seen several specimens, all in good condition, 

 and they are in accord. 



Marginella hesperia, n.sp. PL XVII, Fig. 7. 

 Shell ovate-oblong, smooth, polished, shining, porcelain white ; spire 

 well elevated, protoconch blunt ; whorls 4 ir, piano - convex, with 

 a well-marked suture ; aperture fairly broad, elongate, outer lip 

 thickened and smooth ; columella almost vertical in the lower portion, 

 with four plaits, the upper two nearly horizontal, the third a little 

 ascending, and the lowest more noticeably so. 



