PLATE XCVIII. 



FIGS. PAGE 



1-3. Cosmariutn ochihodes Nordst. I, x 400 (after 



Nordstedt) ; 2, x 520 ; 3, zygospore, x 520 . 10 

 4-6. C. ochihodes var. amoebum West. 4 and 6, x 

 520 ; 5, a few of the depressed, lobed granules,, 

 x 830 . . . ' .11 



7. C. ochthodes var. sultcirculare Wille. x 480 



(after Wille) . . . .12 



8. C. coronatum Cooke & Wills. x 400 (after 



Cooke & Wills) . . .13 



9-12. C.crenatumJ&aUs. 9 and 10, x 520; 11, zygo- 

 spore, x 400 (after Ralfs) ; 12, x 570 (after 

 Nordstedt) . . . .35 



13-14. C. crenatum forma, Boldtiana (Griitw.) W. & G. S. 

 West. 13, x 400 (after Ralfs) ; 14, x 500. 

 Fig. 13 is only an outline, the surface marks 

 not being represented . . .37 



15. C. crenatum var. bicrenatum Nordst. x 570 



(after Nordstedt) . . .38 



