PLATE XXXIV. 



FIGS. PAGE 



1-2. Euastrum humerosum Ralfs. 1, x 520 ; 2, x 400 



(after Ralfs) . . . .8 



3-6. E. pinnatum Ralfs. 3-5, x 430 ; 6, x 400 . 10 

 7-9. E. oblongum (Grey.) Ralfs. All x 430. Fig. 8 

 is the side view and fig. 9 the vertical view 

 taken from a smaller specimen than fig. 7 . 12 

 10. E. oblongum var. depauperatumWest & G-. S. West. 



x 520 15 



