BY T. \V. EDGEWORTH DAVID AND WALTER HOWCHIN. 583 



Fig. 2. — Internal cast from Crystal Brook, genus not determinable. 



Fig. 4. — Internal cast in siliceous limestone, perhaps referable to the 

 Radiolaria; Brighton, near Adelaide. 



Figs. 5 and 6. — Internal casts in siliceous limestone, perhaps related to 

 Carposjjhcera; from Brighton, near Adelaide. 



Fig. 7. — Form doubtfully referable to the Radiolaria. from siliceous lime- 

 stone, Brighton, South Australia; possibly allied to Cenellipsis. 



Fig. S. — Internal cast in siliceous limestone, perhaps referable to the 

 Raeliolaria; Brighton, South Australia. 



Plate xl. 



Fig. 1. — Sketch Section from near Ardrossan, Yorke's Peninsula, to Murray 

 Bridge, South Australia. 



Fig. 2. — Section showing probable junction between the Lower Candjriau 

 and the Pre-Cambrian Rocks near Ardrossan, Yorke's Penin- 

 sula, S.A. 



Fig. 3. — Map showing positions of chief localities where fossil Radiolaria 

 have been found in S.E. Australia. 



