EXPLANATION OF PLATE LXXVIL 



Ckrussitk. 



Figs. 1, 2. Broken Hill, N. S. Wales. Arrowliead twin on r (1:^0) in ortho- 

 graphic and clinographic projection. 



Fig. 3. Broken Hill. Stereogram (tlie form *( 121) is inadyertently omitted). 

 ,, 4. Zeehan, Tasmania. Segments subscribed 1 and 2 are twinned to each 

 other on m (110), as are those subscribed 3 and 4. 



(For lettering and indices see Explanation of Plate Ixxvi.). 



