Plate 98 



Fig. i. Chrifsosphaerella longispina Lauterborn, x 700 



Fip; 2. Rhizochrysis limnetica G. M. Smith, x 400 (redrawn 



from Smith ) 



Figs. 3-5. Dinobryon Tabellariae (Lemm.) Pascher, x 1000 (re- 

 drawn from Smith ) 



Fig. 6. Dinobryon bavaricwn Imhof, x 700 



Fig. 7. Dinobryon divergens Imhof, x 750 



Figs. 8, 9. Dinobryon calciformis Bachmann, x 1000 (after Smith) 



Fig. 10. Dinobryon sertularia Ehrenberg, x 500 



Figs. 11, 12. Hyalobryon mucicola (Lemm.) Pascher, x 1000 



Fig. 13. Dinobryon sociale Ehrenberg, x 750 



S5P. ' 



