M0HTJ8CA. 499 



M. concentrica, Eeeve, which ia regarded by some authors as a 

 variety of this species, is, I think, sufficiently distinct. The spire 

 is rather more acuminate, the whorls are not angular, the oostsB 

 more numerous and not acutely noduled. 



54. Turricula (Callithea) modesta, Beeve. 



Darros Island, in 22 fms. ; also Mauritius (Sowerby if Lienard) ; 

 Philippines {Cwming). 



55. Turricula (Callithea) bipartita. (Plate XLIV. fig. 0.) 



Shell small, fusiformly ovate, having the spire and the upper 

 half of the body-whorl white, and the lower half stained with a 

 dirty pale flesh-coloured band beneath and pinkish white at the 

 extremity. Whorls 8 ; three apical smooth, convex, the rest a little 

 convex at the sides, longitudinally costate and spirally grooved. 

 Costae about 14 in number on the penultimate whorl, attenuated 

 inferiorly on the last, and not quite cut across by the transverse 

 sulci ; these are deepish, not quite so broad as the interstices,' 

 numbering from 6 to 7 on the penultimate volution and about 16 

 on the last. The aperture is small, occupying less than half the 

 length of the sheU. The columella is pale pink, covered with a 

 thin callus bearing four oblique plaits. The outer Up is thin, and 

 armed within with about eight thread-like lirae. Length 6 millim., 

 diam. 2^. 



Providence Eeef and Cerf Island, Mascarenes, in 10-24 fms. 



This is a very small species, but probably adult, as the more 

 crowded character of the costae behind the labrum indicates. The 

 dirty fleshy zone around the middle of the body- whorl is sometimes 

 slightly visible upon the spire just above the suture. 



56. Marginella picturata. (Piaie XLIV. fig. P.) 



MargineUa (Glabella) picturata, G. Sc H. Nemll, Journ. As. Soc. Bengal, 

 1874, vol. xfiU. pt. 2, p. 23, vol. xhv. pi. 8. f. 89; copied by fVein- 

 kauff, Conch-Cab. pi. 22. figs. 13, 14. 



Poivre Island, Amirantes, in 20 fms. ; Mauritius {Nevill). 



A very pretty specimen from Poivre Island is somewhat dif- 

 ferently painted, the spots upon the white zones being curved or 

 almost arrowhead-shaped, and in four series upon the body-whorl'; 

 two of these, namely one a little below the suture and the other 

 just beneath the middle, are less distinct than the others, which 

 fall above and below the lower more indistinct one. The outer Up 

 has a fourth red spot at the upper extremity, and the anterior end 

 of the columella is tinged with the same colour. 



57. Dolium (Malea) pomum, Linne. 



Glorioso Islands, on reefs, dead. 



I 2r 2 



