PLATE XIII. 



Figures magnified 500 diameter? 



P W.I'. 



Fig. \-2. ' OSMARIDM m \ !; MMiiri 1:1 \i : mal, front view, and empty 



itemicells, transverse view, 7 1 



Fig. 3. zygospore with the empty semi- 



.. II . . . . .71 



' 4. - w \i:ii M PUNCTULATUM, . . . . 7 1 



5 7. C08MARIUW B0TBYTI8, three forms. . . .74 



B, '.'. Cohmarium ovale, smaller and larger form, . 57 



10,11. COSMARIOM I '.1: 1.1:1 < >N 1 [. 1 \\ . . I< .1111--. .... 7") 



1 'ig. 12. Co8marium in 1 1. 1. 'Mi 1 m -M, . . . . . 7.") 



13. Cosmariow rKTKAOPHTHAi.MUM, or tetropthalmum, . 75 



' II. ( .-m v i;i 1 m latum, ends too convex for typical form, . 76 



' 15. COSMABIUM DENTATI M, . . . . 7li 



