210 THE VOYAGE OF H.M.S. CHALLENGER. 



Station 316. February 3, 1876. Lat. 51° 32' S., long. 58° 6' W. Port Louis r 

 Falkland Islands. 4 to 5 fathoms. Mud. 



Habitat. — Peru. 



The operculum of this species, like that of Fusiis (Colus) hanleyi, Aug., is slightly subspiral, the 

 nucleus not being apical, but souiewhat turned round. I regret having failed to get young specimens 

 of the species, and that all the specimens I have seen have the upper whorls a little rubbed. This has 

 made the identification of the specimen from Station 149b above somewhat doubtful, the shell being 

 not quite full-grown and very fresh. The spiral threads are much sharper, and this of itself gives 

 the impression of a different texture of shell. The longitudinal riblets are much weaker, and this 

 considerably affects the form of the whorls, which are above more conical and less prominent, while 

 below they are less cylindrical. On the whole, however, it would be difficult to part them without 

 a fuller series of specimens. [On revision I feel quite sure this identification is right.] 



28. Fusus [Metula) philippinarum, Watson (PI. XII. fig. 1). 



Fusus (Metula) philippinarum, "Watson, Prelim. Report, pt. 14, Journ. Linn. Soc. Lond., vol. svi. p. 373. 



Station 210. January 25, 1875. Lat. 9° 26' N., long. 123° 45' E. Philippines. 

 375 fathoms. Blue mud. Bottom temperature 54° - l F. 



Shell — Strong, porcellanous, pale ruddy brown, fusiform, long, subscalar, with feeble 

 ribs and with spiral threads ; the whorls are slightly angulated ; the mouth long, with a 

 slight emargination above, and an open triangular canal in front. Sculpture: Longi- 

 tudinals — there are on the upper whorls about 15 small, sharpish, straight, bluntly 

 mucronated ribs, which are feeble on the shoulder beneath the suture, but stronger 

 below ; on the later whorls these are less distinct and more oblique, becoming flexuous on 

 the base ; these correspond exactly with the delicate crimpings of the lines of growth. 

 Spirals — the whole surface is covered with fine, regular, and equal narrow threads and 

 broader furrows ; of these, on the penultimate whorl there are about 15, the centre one of 

 which is thrown into prominence by a slight angulation, very marked on the earlier but 

 feeble on the later whorls. Colour pale ruddy brown, with a flinty pellucidness, especially 

 toward the apex, and more of whiteness toward the point of the snout. Spire high, 

 conical, subscalar. Apex contracting abruptly to a small raised point, formed by about 

 three smooth rounded embryonic whorls, which are not sharply distinguished from those 

 which follow, the regular sculpture making its appearance gradually. Wlwrls 8 in all ; 

 the upper ones have a sloping shoulder, are angulated in the middle, and are cylindrical 

 or slightly contracted below ; the last is more rounded, and is produced into a long and 

 pointed base, ending in a triangular conical snout. Suture slightly channelled. Mouth 

 long and pear-shaped. Outer lip thickened internally with a strongish white varix, 



