354 



Upper portions of the Muddy Creek Beds gives independent 

 confirmation of the conclusions already reached from their dis- 

 similar fossil contents of a well-marked unconformability existing 

 in the Tertiaries of Western Victoria. 



General Microzoa. — The following were observed in course of 

 examination of material, viz. :— Several species of Entomostraca, 

 otolites, small fish bones, and a few straight and rough arena- 

 ceous tubes of doubtful affinities. 



DESCRIPTION OF PLATE XIII., figs. 11 to 13. 



Figs. 11-13. Truncatulina margaritifera Yax. Adelaidensis, Howchin. 



Fig. 11. Lateral view of superior surface of test, x 36 diam. 



Fig. 13. Lateral view of inferior side, showing oral aperture somewhat 



broken. 

 Fig. 12, Peripheral aspect, showing the compressed features of the test 



oral aperture and biconvex outline of the primordial region. 



