PLATE XXIII. 



Figures magnified ."MO diameters. 



PAGE. 

 Fig. 1. TETMEMORUS BREBISSONII, long form, . . . .98 



" 2. shorter and more usual form, . 98 



" 3. TETMEMORUS LAEVIS, . . . . . .98 



Figs. 4, 5. TETMEMORUS BREBISSONII, Var. turgidus, two forms, front view, 98 

 Fig. 6. TETMEMORUS OIOANTEUS, (See also Plate XII), . . . 91) 



Figs. 7, 8. TETMEMORUS MINUTUS. conjugating and more advanced condition 



of spore, . . . . .99 



Fig. 9. " " zygospore fully developed, . . 99 



