M0LLU9CA. 490 



M. concentrica, Reeve, which is regarded by some authors as a 

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

 is rather more acuminate, the whorls are uot angular, tho costa) 

 more numerous and not acutely uoduled. 



54. Turricula (Callithea) modesta, Reeve. 



Darros Island, iu 22 fms. ; also Mauritius (Sowcrby $• Lienard) ; 

 Philippines {Cuming). 



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



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

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

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

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

 convex at the sides, longitudinally costate and spirally grooved. 

 Costa? about 14 in number on the penultimate whorl, attenuated 

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

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

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

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

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

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

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

 diam. 2|. 



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



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

 crowded character of the costse 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. 



Margin 



5G. Marginella picturata. (Plate XLIV. fig. P.) 



yiiiella (Glabella) picturata, G. 8f II. Nevill, Jburn. As. Soc. Bengal, 

 1874, vol. xliii. pt. 2, p. 23, vol. xliv. pi. 8. f. 89 ; copied by IVein- 

 kaitff, Conch.-Cab. pi. 22. hgs. 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 lip 

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

 of the columella is tinged with the same colour. 



57. Doliuin (Malea) pomurn, Linne. 



Glorioso Islands, on reefs, dead. 



2k 2 



