Zaphbentis sp., indet. 



Locs. Shoalhaven River (B); Burrier (D). 



Hor. Wandrawandian Series. 



Obs. One fair specimen from the first locality is over 

 two inches io length, in the shape of a bent horn ; but in 

 the absence of a section it is impossible to name it specific- 

 ally. The Burrier specimen is very poor. 



Dielasma hastata, J. de 0. Sowerby. (Min. Con., 1824, v, 

 p. 66 and 446). 



Locs. (1) Grassy Gully (P); Burrier (D); {2) Shoalhaven 

 River near Nowra (Q). 



Hor. Wandrawandian Series ; Nowra Grits. 



Obs. The typical form is abundant both at Burrier and 

 Grassy Gully, but not so common in the Nowra Grits. 

 Dielasma hastata, J. de O. Sowerby, var.GLOBOSA, var. nov. 



The following is the description of an internal cast, the 

 only specimen found : — Contour of dorsal valve transversely 

 oval. Contour of ventral valve with its greatest width for 

 base, that of a depressed isosceles triangle. Ventral valve 

 considerably the larger. Thickness through united valves 

 equal to height of dorsal valve. Foramen fairly large and 

 sloping. The surface is ornamented by a number of shallow 

 converging folds, corresponding to growth markings. 



Dimensions:— Height to beak of ventral valvef of an inch; 

 width of dorsal valve ] of an inch; height of dorsal valve 

 h an inch ; thickness of united valves | an inch. 



Loc. Longreach, Shoalhaven River (A). 



Hor. Wandrawandian Series. 



Obs. This remarkable little shell is characterised by its 

 great width and depth. The ventral valve is slightly com- 

 pressed, but this has had no effect upon the contour of the 



