448 A LARGE EQUISETUM FROM THE HAWKESBURY SANDSTONE, 



In the mean time, rather than coin a new name for this fossil, 

 it will be better to provisionally regard it as E. latum, Ten. "Woods. 



The scars noticeable at some of the nodes are probably those 

 left by rootlets, similar to those figured by Schimper in Calamites* 



I am indebted to Dr. J. C. Cox's kindness for an opportunity of 

 noticing this very interesting plant. 



EXPLANATION OF PLATE. 



Basal portion of the decorticated stem of an Equisetum from the Hawkesbury 

 Sandstone of North Shore, Port Jackson. 



* Schimper, loc. cit,, Atlas, t. 13, f. A and B. 



