BY C. HEDLEY. 463 



universal distribution in warm seas," while Locard* separates 

 several species. 



No one has yet remarked the occurrence of Litiopa in Austra- 

 lian seas. But I find a member of it occurring at Sydney and 

 several points along the Queensland coast — Green Island, Hope 

 Island, and Eclipse Island. This appears to be the same as one 

 I obtained from New Caledonia, and therefore determined as L. 

 lymnophysa Melvill & Standen.f The species is subject to con- 

 siderable variation, besides a difference, probably sexual, of 

 breadth, the colour ranging from white spotted with brown to 

 uniform cinnamon-brown. Aged examples produce a thick 

 bilobed callus ridge on the columella. The axial furrow, or 

 incipient umbilicus, is more apparent in some instances than in 

 others, and at its greatest development is bordered by a funicular 

 ridge. 



Dr. J. Richard, the Director of the Oceanographic Museum of 

 Monaco, has kindly assisted me with examples for comparison of 

 L. melanostoma from N. lat. 31° 38', W. long. 42° 38', in the 

 Sargasso Sea. Certain differences appear. The Sydney shell is 

 larger, comparatively broader, and develops an axial furrow and 

 stronger columellar callus than the Atlantic shells. In considera- 

 tion of the great range of variability in all pelagic shells, for 

 instance in Ianthina and Cavolitta, it seems to me best to record 

 the Sydney shell as a form of Rang's species. 



My figure is derived from a specimen 4*5 mm. long and 2*4 mm. 

 broad, taken by the late Mrs. Starkey on Balmoral Beach, 

 Sydney. 



A good recognition mark is supplied by the exquisitely sculp- 

 tured protoconch. 



Scissurella rosea, Hedley. 



Hedley, Records Austr. Mus. v. 1904, p.90, f.17. 



I find that this species, originally described from New Zealand, 

 occurs also on the hither side of the Tasman Sea. Specimens 



* Moll. Exped. ".Talisman," i., 1897, pp.498-500. 

 t Melvill & Standen, Journ. of Conch, viii. 1896, p.305, Pl.xi, £.72. 



