(3) The hinge line of .4. media is slightly shorter than the 

 greatest width of the shell, that of A. profundus is 

 broader. 

 Loc. Burrier (D). 

 Hor. Wandrawandian Series. 



Obs. Two specimens were found ; an imperfect right 

 valve with a well preserved auricle, and a nearly perfect 



Deltopecten subquinquelineatus, McCoy. (Ann. Mag. 

 Nat. Hist. 1847, xx, p. 398, pi. 17, f. 1). 



Loc. Grassy Gully (F); Burrier (D). 



Hor. Wandrawandian Series. 



Obs. This is one of the most common species at Grassy 

 Gully, and specimens are splendidly preserved. In the large 

 series collected, the outline was somewhat variable, rang- 

 ing from almost circular to longitudinally oval. There is, 

 however, no break in the continuity of the variation, and 

 the specimens are all evidently one species. Some of them 

 are testiferous, and in a number of the casts, the large 

 chondrophore is very well shown. One good specimen 

 showing two orders of costae was found at Burrier. 

 Deltopecten fittoni, Morris sp. (Strzelecki's N.S.Wales 

 and Van Dieman's Land, 1845, p. 277, pi. 14, f. 2). 



Loc. Burrier (D). 



Hor. Wandrawandian Series. 



Obs. Two good specimens of this species were found at 

 Burrier, both with portion of the shell preserved and show- 

 ing plainly the large chondrophore. 



MKRih.uopTERiA macroi'TERa, Morris sp. (Strzelecki's 

 N. S. Wales and Van Dieman's Land, 1847, p. 276, pi. 

 13, f. 2, 3). 



Loc. Burrier (D); Cambewarra Mountain. 



