404 THE VOYAGE OF H.M.S. CHALLENGER 



2. Nassaria suturalis, A. Adams, var. bitubercularis, A. Adams. 



Hindsia suturalis, A. Adams, Proc. Zool. Soc. Loud., 1853, p. 183, sp. 6, and 1850 (Rindsia bituber- 



cularis) sp. 8, pi. (Moll.) x. fig. 6. 

 Nassaria bitubercularis, Sowerby, Thes. Conch., voL iii. p. 86, sp. 2, pi. ccxx. fig. 5, and (Nassaria 



suturalis) figs. 15, 10. 

 „ suturalis, Brazier, " Chevert " Exped. Shells, Proc. Linn. Soc. New South Wales, 1877, voL i. 

 p. 177, No. 32. 

 Hindsia suturalis, Kobelt, Conch. Cab. (ed. Kiister), p. 318, sp. 4, pi. lxxvii. figs. 11, 12. 

 Nassaria suturalis, E. A. Smith, "Alert" Collections, p. 49, No. 31. 



Station 208. January 17, 1875. Lat. 11° 37' N., long. 123° 31' E. Philippines. 

 18 fathoms. Blue mud. 



Habitat. — North Australia and New Guinea, 5 to 1 1 fathoms (Brazier) ; Malacca 

 (Adams). 



The Nassaria bitubercularis, A. Ad., figured in the Proc. Zool. Soc. Lond., 1850 (ut supra), seems 

 to represent a different species from that thus named in the British Museum. In the explanation of 

 the plates at p. 4, the figures are named Nassaria bitubercularis, A. Ad., and there is a reference to 

 the year 1850, but no page in the Proceedings is given. I have, however, quoted according to the 

 nomenclature of the British Museum. Mr Edgar A. Smith (loc. cit. supra) is of opinion that Nassaria 

 suturalis and Nassaria sinensis, Sow., are only varieties of one species, which I can very well believe 

 to be true. At the same time I confess I thought them fairly separable. 



3. Nassaria amboynensis, Watson (PI. XIV. fig. 11). 



Nassaria amboynensis, Watson, Prelim. Eeport, pt. 7, Journ. Linn. Soc. Lond., vol. xv. p. 273. 



October G, 1874. Amboyna. 15 to 25 fathoms. 



Shell. — Ovate, conical, pointed, varixed, brown-banded, a very contracted base, with a 

 short, recurved, and somewhat twisted snout. Sculpture: Longitudinals — there are on 

 each whorl 11 or 12 (on the earliest about 10), strong, prominent, well-defined, rounded, 

 curved, and inclined ribs, of which about 2 on each whorl are stronger than the rest ; these 

 ribs extend to the beginning of the snout, and swell up over, but are interrupted by, the 

 suture which at the top of the whorls cuts them off ; they run down the spire with an in- 

 clination towards the right ; the rather deep interstices are fully broader than the ribs : 

 besides these, the whole surface is roughened with slight unequal lines of growth, which are 

 most distinct on the earlier whorls. Spirals — the surface is beset with unecpual threads, of 

 wLich about 6 on the body and 4 on the base are stronger and more prominent than the 

 rest ; the two in the middle of the whorls are most so of all ; between these are 3, 4, or 5 

 unecpual, raised, and sharpish round threads, especially prominent on the longitudinal ribs ; 

 the hollows between these are variable in width, deep, and flat-bottomed, though sometimes 

 filled by another minute thread ; these intervals are finely scored, while the threads are 

 coarsely roughened and crumpled by the longitudinal lines of growth : besides these, the 



