BY C. HEDLEY. 477 



Ty p e. — To be presented to the Australian Museum. 

 Since I last wrote on this genus, it has been reviewed and 

 enlarged by Dr. Dall.* 



Cyamiomactra nitida, n.sp. 

 (Plate ix., figs 19-20). 



Shell small, moderately solid, inflated, inequilateral, the 

 anterior end rather pointed, the posterior truncate, very glossy. 

 Colour rufous. Sculpture : the whole surface marked with faint 

 and rather irregular concentric growth-lines, radial sculpture 

 absent. The protoconch a distinct cap with a slightly thickened 

 rim. Hinge contracted, the bifid cardinal projecting further than 

 usual into the valve. Height 2*2; length 2*6; depth of single 

 valve 9 mm. 



In 20 fathoms, sand, five miles from Sussex Inlet, Wreck Bay, 

 N. S.Wales, I dredged several living examples in December, 1905. 



By its wedge-shape, lack of radial sculpture and hinge, this 

 approaches nearest to the type of the genus. But it is contrasted 

 with C. problematica by being much smaller, more inflated and 

 glossy. 



Since I reviewed this genusf an Antarctic member, C. lami- 

 ni/era, has been discovered by Dr. Lamy.J It seems to me 

 probable that another Antarctic shell described as Cyamium 

 denticulatum,§ can also be referred to this genus. 



By the kindness of the Director of the British Museum and of 

 Mr. E. A. Smith, I have been favoured with the loan of cotypes 

 of rare unfigured gasteropods, and notes on others. From this 

 source I have obtained the following information and illustrations 

 of little-known Australian shells. 



Mr. Smith writes (4 Nov., 1907) that he cannot now find the 

 following five species in the British Museum Collection. Since 



* Dall, Trans. Wagner Inst. Sci. iii. 1903, p. 1480. 

 t These Proceedings, xxx. 1905(1906), p.540. 

 X Lamy, Expedition Charcot, Moll. 1906. p. 11, PI. i. f. 10, 11, 12. 

 § Smith, Discovery Expedition, Moll. 1907, p. 3, PI iii. f. 4-4b. 



