BY C. HEDLEY. 199 



The pallial line, which could hardly be " crenulated," is indi- 

 cated by a similar dotted line. 



A French fossil which actually had a crenulated margin 

 occurred to Lamarck, so, misled by Gmelin, he naturally referred 

 it to the Chemnitzian species. To the fossil he gave the name of 

 C. tumida.^ But he had previously bestowed the name C. gibbaf 

 upon the figures of Chemnitz. On material gathered by Peron, 

 he erected Crassatella kingicola.X 



Dillvv^^n adapted, as his custom was, the name from Chemnitz 

 of Venus j^lumbea.'^ 



I have nothing to add to the range of this species in New 

 South Wales recorded by Brazier, viz., off Merimbula, in 17 

 fathoms, and the beach at Ballina. 



Dacrydium fabale, n.sp. 

 (Plate X., tig. 39.) 



Shell minute, thin, semitransparent white with iridescent 

 reflection. Short, broad and inflated; umbo slightly projecting, 

 dorsal margin arched, ventral sinuate. No radial sculpture, 

 delicate, concentric growth-lines which rise into ridges on the 

 ventral side. Hinge : a deep chondrophore, flanked by two pro- 

 minent grooved cardinals; the dorsal interior margin carries a 

 long, crenulated band, which is absent on the opposite side. 

 Height 2-8; length 2-0; diameter of single valve 8 mm. 



JIab. — Sixteen miles east of Wollongong in 100 fathoms; 

 several specimens dredged by Mr. G. H. Halligan and myself. 



Type. — To be presented to the Australian Museum. 



This species adds a genus to the Australian fauna. The con- 

 tour and especially the ventral sinuation effectually separate it 

 from other members of the genus. 



* An. s. Vert. v. 1818, p. 418. 



t Syst. des. An. s. Vert. 1801, p. 119. 



I Ann. du Mus. vi. 1804, p. 408. 



§ Descr. Cat. Rec. Shells, i. 1817, p. 191. 



