PLATE LXXIV. 



FIGS. PAGE 



1. Cosmarium Cucurbita Breb. forma latior. x 520 108 

 2. C. Cucurbita forma major. x 400 . .107 



3. C. Ciicurbita. Immature zygospore. x 520. 



The mature zygospore is verrucose. . 106 



4-6. C. Palangula Breb. 4, x 350 (after Brebisson) ; 



5 and 6, x 520 . . . . 108 



l.G. Subpalangula Elfv. x 400 (after Elfving) . 109 

 8-10. C. parvulum Breb. 8, x 450 (after Brebisson) ; 



9 and 10, x 520 . . 110 



11. This figure may possibly represent the zygo- 

 spore of C. parvulum Breb., but only having 

 seen this one example we do not offer a 

 definite opinion . . .111 



12-13 C. goniodes W. & G. S. West. 12a and b, and 



13, x 520; 12a', x 830 111 



14. C. goniodes var. subturgidum W. & Gr. S. West, 



x 520 ... 112 



15. C. goniodes var. variolatum W. & Gr. S. West. 



x 400 . . . . 112 



16-18. C. viride (Corda) Joshua. 16, x 450 (after 

 Joshua); 17, x 400; 18, x 500 (after 

 Turner) .... 



19. C. viride forma minor West. x 400 . 113 



20. C. oblongum Benn. x 400 (after Bennett) . 114 

 21. C. Hibernicum West. x 400 . .114 



22-23. C. subturgidum (Turn.) Schmidle forma minor 



Schmidle. x 520 . . 117 



24-25. C. attenuatum Breb. 24, x 400 (after Ralfs) ; 



24a', outline only ; 25, x 520 . . 118 



