TRAISACTIONS Al PROCEEDINGS 



OF THE 



ROyALSOCIEiy of SOUTH AUSTRALIA 



(INCORPOI^ATCD). 



-VOL. XLUjI'T". 



[With Twenty-three Plates, and Twenty-four 

 Figures in the Text.] 



EDITED BY PROFESSOR WALTER HOWCHIN, F.G.S., 



Assisted by ARTHUR M. LEA, FES. y 



/^%^' 



A^isonian /r.i/^r^ 



PRICE, TEN SHILLINGS AND SIXPENCE. 



^belatire : 



Published by the Society, Royal Society Rooms, North Terrace. 

 DECEMBER 24, 1920. 



PrINTEI) by HuSSEY & GiLLlNGHAM, LiMITED, 106 AND 106, CURRIE 



Street, Adelaide, South Australia. 



Parcels f«r transmission to the Royal Society of South Aus- 

 tralia from the United States of America can be forwarded 

 through the Smitlvsonian Institution. Washington, D.O. 



