214 REMARKS ON FOSSILS OF PERMO-CARBONIFEROUS AGE. 



(3) The Upper or Sandstone Series of Hardman in the 



Lennard and Fitzroy districts is probably characterised 

 by a fauna as well as a flora. 



(4) The fauna in question shows a more general similarity to 



that of the Permo-Carboniferous formation of Eastern 

 Australia and Tasmania, than it does to any other 

 fossiliferous group of rocks. 



EXPLANATION OF PLATE XVII. 



Athyris Madeayana, sp.nov. 



Fig. 1. View of the flattened ventral valve showing foramen. 

 Fig. 2. View of convex dorsal view. 



Fig. 3. Side view showing line of union of the valves, relative convexity, &c. 

 Fig. 4. The hinge with united valves, foramen, &c. 



Fig. 5. A dorsal valve, decorticated, with the shelly spires visible on the 

 right hand side. 



Cyrtina carhonaria, McCoy, var. australasica, var.nov. 



Fig. 6. View of a ventral valve of a large specimen, defective about the 



umbonal region. 

 Fig. 7. Side view of another example, showing relative convexity of the 



ventral valve. 

 Fig. 8. Fractured ventral valve with the large septum. 



(The figures ai^e all of the natural size.) 



