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



are very many close-set lines of growth : the surface of the thin membranaceous epidermis • 

 is very finely and sharply wrinkled, so as to project in very fine lamellse. Spirals — there 

 are on the upper whorls 7 to 8 narrow, rounded threads, parted by wider furrows which 

 are very shallow. The spirals become feebler and sparser on the last whorl, with fainter 

 threads in the intervals. Colour porcellanous white under the pale yellowish-white 

 epidermis. Spire high, blunt, scalar. Apex eroded. Whorls about 6, well rounded, 

 slightly flattened at the top, and a little contracted toward the bottom ; the last is rather 

 tumid. Suture strong and impressed. Mouth oval, rounded above, pointed at the canal, 

 which is very short, wide, and a little oblique. Outer Up thin, well rounded, patulous, 

 and straight along the canal. Inner lip concave from the top of the mouth to the point 

 of the pillar, which is straight, short, rather narrow, and obliquely cut off in front. A 

 very thin glaze runs across the body and down the pillar. Operculum thin, pale yellow, 

 with very regular curves of growth arching from side to side ; in form it resembles a long 

 narrow wedge with a terminal apex. H. T25 in. B. 07. Penultimate whorl, height 0"3 

 in. Mouth, height 077, breadth 0'4. 



This species strongly resembles Euccinopsis canaliculata, Dall, of which he kindly sent me a 

 specimen from Behring's Straits. It has, in particular, the deeply impressed or canaliculated suture 

 of that form ; but it is much thinner, has higher and more tumid whorls, with much finer sculpture, 

 and it has not the lanuginous epidermis of that species. 



17. Fusus (Neptunea) setosus, Watson (PL XII. fig. 4). 



Fusus (Sij)ho) setosus, Watson, Prelim. Eeport, pt. 14, Journ. Linn. Soc. Lond., vol. xvi. p. 376. 



Station 146. December 29, 1873. Lat. 46° 46' S., long. 45° 31' E. Between Marion 

 Island and the Crozets. 1375 fathoms. Globigerina ooze. Bottom temperature 356° F. 



Station 147. December 30, 1873. Lat. 46° 16' S., long. 48° 27' E. Between Marion 

 Island and the Crozets. 1600 fathoms. Diatom ooze. Bottom temperature 34 "2° F. 



Shell. — Thin, white, tumid, setose, with longitudinal and spiral threads, fusiform, with a 

 scalar spire, and a rounded base produced into a short, prominent, lop-sided snout. 

 SculpAure: Longitudinals — there are on the upper whorls many very regular, rounded 

 threads, which become fainter on the later whorls ; besides these, the epidermis is closely 

 wrinkled in minute sharp lamellse. Spirals — there are on the upper whorls 5 to 6 

 rounded threads parted by wider interstices ; these are of about the same strength as the 

 longitudinals ; and their intersection forms a very regular lattice-work, with a short stiff 

 bristle at their crossing-points ; on the last whorl these bristles are crowded close together 

 so as to be contiguous. Colour porcellanous white under the greyish-yellow epidermis. 

 Spire high, blunt, scalar. Apex eroded. Wwrls about 6, well rounded, slightly flattened 

 at the top, and constricted below ; the last is rather tumid. Suture strong and impressed. 



