MOLLUSCA or THE * CHALLENGEB ' EXPEDITION. 383 



ture. Longitudinals — ^fine hair -like lines of growth closely cover 

 the surface. Spirals — near the bottom of each whorl there is a 

 very sharply expressed but not narrow keel, which is closely 

 beset on the edge with rounded compressed little tubercles ; the 

 whole surface of the whorls is scored with fine rounded threads 

 and broader furrows, which are more delicate above than below 

 the keel ; these become obsolete toward the point of the snout. 

 Colour porcellaneous white. ^pire short and conical. A'pex 

 maraillate, but small ; it consists of nearly two glossy, keelless, 

 cylindrical whorls, of which the extreme tip is flattened down on 

 one side. Whorls 7, sharply angulate and biconical, being con- 

 tracted above and below. Suture deep and sharp. Mouth cla- 

 vate, being oval above and produced below into a very long and 

 minute canal. Outer lip sharp, rounded, pinched in at the origin 

 of the canal, down the side of which the line runs straight, and 

 parallel to the pillar. Inner Up slightly hollowed above and very 

 straight in front ; it is defined by a very thin and narrow glaze. 

 H. 0-77. B. 0-28. Penultimate whorl, height 0-08. Mouth, 

 height 0-55, breadth Oil, 



This very beautiful little shell is probably not full-grown, but 

 possesses very marked features in the short conical spire, sharp 

 stellate keel, and enormously long snout. The only form which 

 seems to approach it is the Fusus spiralis, Ad., which has a 

 curious geminately carinated and flattened form of whorls and a 

 long canal ; but the keel is median, the suture wide and deep, and 

 the apex is broad and blunt, while the spire is much less broadly 

 conical. 



13. Fusus (COLUS) PAGODoiDES*, n. sp. 



St. 164 B. June 13, 1874. Lat. 34° 13' S., long. 151° 38' E. 

 Off Sydney. 410 fms. Grrey ooze. 



Shell. — Eather thin, chalky to porcellaneous, pale, oval, with a 

 high scalar spire made up of small sharp-flanged whorls, with a 

 mamillate apex and a very long fine snout, down which from the 

 round mouth runs a thread-like cleft. Sculpture. The surface is 

 scored wdth extremely sinuous fine lines of growth formed by 

 the subimbricated edges of scarcely raised lamellae. Spirals — in 

 the middle of each whorl is a sharp keel, which runs out into an 

 excessively sharp, prominent, compressed, and up-turned flange ; 

 though 60 sharp and compressed, this flange is really double, and 



* So called from its likeuess to F. 'pagoda, Less. 



