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Show '878.] FROM THE ANDAMAN ISLANDS. 811 is very characteristic, and, although not referred to by Reeve or is constant in all the specimens which I have seen. The colour is whitish, with the oblique longitudinal costae usually pale brown; and the tips of the rather acute nodules are white. Nassagruneri, Dunker, is another closely allied form, yet readily distinguished by its colour and sculpture. 32. PHOS SENTICOSUM, 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 lirae 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 oi 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 costae rounded, swollen, gradually increasing in size from the apex downwards and becoming less prominent, crossed by numerous slender finely-scaled lirae, 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 lirae, 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 |