Tertiary Deposits of the Aire and Cape Otway. 45 



Echinoidea. 



Eupatagus rotundus, Laube. 



Psaramechinus woodsi, Laube. 



Scutellina patella, Tate. 

 Brachiopoda. 



Magellania grandis, T. Woods. 



Terebratulina catinuliformis, Tate. 



Magasella conipta, G. B. Sowerby. 



Rhynchonella squamosa, Hutton. 

 Latnellibranchiata. 



Placunauomia sella, Tate. 



Dimya dissimilis, Tate. 



Pecten yahlensis var semilaevis, McCoy. 

 ,, murrayanus, Tate. 

 ,, foulcheri, T. Woods. 



The Aire Coastal Sections. 



For a little more than half a mile westward from the river 

 mouth nothing but dune rock is seen on the beach which is 

 impracticable except at low tide, and even then the passage is 

 rough, as the enormous blocks of dune rock, weathered into sharp 

 points, lie piled in the wildest confusion. Then a small sandy 

 bay is reached, to which we afterwards found access could be 

 easily gained from the downs above. The best way to reach it is 

 to follow a fence which runs to the edge of the cliffs from the 

 stockyard which is situated on the landward slope. About two 

 hundred yards west of the fence a cattle track goes down to the 

 beach. On the eastern side of the bay among the tumbled 

 blocks of dune rock is a small exposure of black clays. This lies 

 on the shoreward side of a prominent pinnacle, about thirty feet 

 high, which is probably what is marked as the Sentinel Rock on 

 Wilkinson's map. The strata consist of black and grey sandy 

 clays with pyrites, gypsum and what appeared to be copiapite. 



There is in places a good deal of carbonaceous matter, and the 

 well-rounded sand-grains are at times as large as a pea. There 

 is about twenty-five feet in vertical thickness exposed, and the 

 outcrop is about a chain in length. We could not find any beds 

 showing beneath these clays, and as the dip is E. 35° N. at 12", 

 the reverse of Wilkinson's observations, it is evident that it is not 



