BY C. HEDLEY. 473 



fine concentric lamellae. Length 5 mm,; height 3 mm.; depth 

 of single valve 1 -85 mm. 



Not uncommon as separate valves in 17-20 fathoms. 



The numerous delicate radials and the very narrow smooth 

 ray afford recognition marks for the distinction of the species. 



Julia exquisita Gould. 

 Julia exquisita Gould, Smith, Chall. Rep. xiii. 1885, p. 269. 



Several dead and separate valves were found among the dredg- 

 ings. One perfect vivid green shell adhered to a strip of green 

 seaweed- This interesting species adds a family to the Austra- 

 lian fauna. Previously it had only been found at Bourbon and 

 Hawaii. 



Myodora pulleinei, n.sp. 



(Plate xxxvi., fig.7.) 



Shell moderately solid, elongate, nearly equilateral, left valve 

 plane, right much compressed. Colour white. Dorsal margins 

 nearly straight, meeting in a hook at the umbo. Posterior end 

 broadly' and obliquely truncate, anterior angular. Sculpture: 

 about ten concentric, graduated, broad and high corrugations, 

 which are sharply bent on crossing an imaginary line between 

 the umbo and the postero-dorsal angle. In the left valve the 

 crests of the ridges are acute, in the opposite valve rounded. A 

 high magnification exhibits a secondary sculpture of dense minute 

 grains arranged radially. Length 6 mm.; height 4 mm. 



Rare; a few separate valves from 17-20 fathoms. 



This species is named in honour of the well-known concholo- 

 gist, Dr. R. Pulleine, who accompanied our party to Mast Head. 



Ccelodon elongatus Carpenter. 

 Carpenter, Proc. Zool. Soc, 1864, p. 600. 



(Plate xxxvii., fig. 16.) 



An unfigured species cannot safely be identified except by 



those fortunate enough to have access to authentic specimens. 



The record by the 'Challenger' of G. elongatus from Torres 



Strait suggested that name for a specimen here figured, which is 



33 



