MOLLUSOA OE THE ' CHALLENGEE ' EXPEDITION". 605 



the canal angulated. Inner Up short, arched, expanded, with 2 

 small tubercles in front, and a very slight umbilical depression 

 behind it; obliquely and curvedly cut off by the canal. H. 1. 

 B. 0-52. Penultimate whorl, height 0-2. Mouth, height O'G, 

 breadth 0-27. 



This species is represented by one specimen, in poor condition. 

 It is somewhat like the young, or even some of the elongated 

 forms of 31. (or Pseudomurex) Meyendorfii, Calc. ; but it is more 

 attenuated, with a less-impressed suture, longer body-whorl, 

 stronger and straighter ribs, and much more delicate spirals. 



Typhis phillipensis, n. sp. 



St. 161. April 1, 1874. Lat. 38° 22' 30" S., long. 144° 36' 

 30" E. Off the entrance to Port Phillip, Melbourne. 38 fms. 

 Sand. 



Shell. — Thinnish, buff-coloured, oblong-fusiform, biconical, 

 scalar, with a shortish spire, a papillary tip, variced and hoUow- 

 spined whorls, a contracted base, and a long, fine, reverted and 

 dextrally bent, closed snout. Sculpture. Longitudinals — there 

 are on each whorl about 9 ribs, which are alternately rounded 

 and sharpish ; the latter are varices, which on the last whorl run 

 out to the point of the base ; they bear 5 upturned and reverted, 

 almost twisted, hollow spines, which are open in front ; the inter- 

 mediate ribs are very slight in themselves, but bear each at the 

 periphery the straight tube of the genus (of which only the last 

 opens through the shell), and belowthis, in the line of the suture's 

 course, a prominent round-topped tubercle ; the intervals are 

 hollow and broader than the ribs : the surface is scored with 

 sharp lines of growth, which are much distorted by the spines. 

 Spirals — there is an obscure angulation of the shell at the upper 

 row of tubercles ; there are faint microscopic scratches on the 

 whole surface. CoZo^r buff', with obscure dark-chocolate spots at 

 the suture, the periphery, and toward the point of the base ; the 

 spines and mouth are whiter ; there is a kind of chalky bloom on 

 the surface. Spire rather short, conical, scalar. Apex pale, 

 smooth, papillary, blunt, rather large, consisting of two rounded 

 cylindrical whorls, divided by a deep and very oblique suture ; 

 just above the first mouth-edge is one of the hollow tubes of the 

 genus. WJwrls 6, of slow increase, angulated, with a flat hori- 

 zontal shoulder above, below which they are cylindrical ; the last 

 is slightly tumid, feebly bicarinated, with a contracted conical 

 base, which is produced into a broad flat snout, dra-\vn out to the 



