PLATE XXm. 



Figures magnified 500 diameters. 



Page. 

 Fig. 1. Tetmemorus Bkebissonh, long form, . 98 



" 2. " " shorter and more usual form, . 98 



" 3. Tetmemorus laevis, . . . . . .98 



Figs. 4, 5. Tetmemorus BREBissoNn, Var. turgidus, two forms, front view, 98 



Fig. 6. Tetmemorus giganteus, (See also Plate XII), . . .99 



Figs. 7, 8. Tetmemorus minutus, conjugating and more advanced condition 



of spore, . . .99 



Fig. 9. " " zygospore fully developed, 99 



