1878.] FROM THE ANDAMAN ISLANDS. 811 



is very characteristic, and, although not referred to by Reeve or Adams, 

 is constant in all the specimens which I have seen. 



The colour is whitish, with the oblique longitudinal costse usually 

 pale brown ; and the tips of the rather acute nodules are white. 

 Nassa gruneri, Dunker, is another closely allied form, yet readily dis- 

 tinguished by its colour and sculpture. 



32. Phos senticostjm, Linn. 



Hab. Philippines. 



This beautiful and well-known species varies very considerably in 

 colour, from white with dark transverse bands to uniform rich purple- 

 brown, with some of the spiral thread-like lirse yellow. 



33. Phos roseatum, Hinds. 

 Hab. Philippines, Moluccas, &c. 



34. Phos textum, Gmel. 



Buccinum blainvillei, Deshayes. 



B. cancellatum, Quoy & Gaimard. 



Phos cyanostoma, Sowb. (not of A.. Ad.), Thes. fig. 46. 



Hab. Philippines. 



The shell figured by Sowerby as P. cyanostoma of A. Adams is 

 a slight variety of P. textum, differing in having a somewhat elongated 

 spire and the body-whorl a trifle shorter than usual, and constricted 

 just above the raised ridge which encircles the extreme base or cauda 

 of the whorl. The painting is precisely the same in both forms. The 

 true cyanostoma (described in the Proc. Zool. Soc. 1850, p. 155) is 

 very like this variety in form and sculpture, but is distinguished by 

 the margins of the columella and labrum and the tip of the body- 

 whorl being stained with violet. 



35. Fusus? abnormis. (Plate L. fig. 10.) 



Shell imperforate, oblong, turreted, pale yellowish-brown ; whorls 

 9, very convex, divided by a deep channelled suture, obliquely plicated ; 

 plicae or costse rounded, swollen, gradually increasing in size from the 

 apex downwards and becoming less prominent, crossed by numerous 

 slender finely-scaled lirse, which are alternately coarser and finer, 

 numbering about 15 on the penultimate and about 40 on the last 

 whorl; aperture small, irregularly pyriform, about one third as long as 

 the entire shell, dirty white within, with the outer lip simple, with 10 

 fine thread-like lirse, which extend within as far as can be observed, 

 but do not attain quite to the edge of the lip : basal canal short, 

 narrow, oblique, and a little recurved. Length 23 mill., diam. 11|. 



This species is totally unique in form and sculpture ; and it is with 

 considerable doubt that I have placed it among the species of Fusus. 

 It also exhibits some affinity with Coralliophila, which genus, as 

 generally accepted, contains a group of species which are usually 

 inhabitants of Madrepores, and are characterized by the white or 

 purplish colour, and the scaly nature of the transverse ridges, and 

 the shortish open channel at the base of the aperture, which is 



