PLATE XXV 



Figures magnified 500 diameters. 



Page. 



Xanthididm Antilopabdm, Var. triquetnim, front view, 101 



" " triangular end view, 101 

 " ' zygospore with the empty semi- 

 cells attached, 101 

 Xanthidium fascicui-atum, . . 101 

 ■' " in process of dividing, 101 

 " " a semi-cell in two views, develp- 

 ing a sort of spore without con- 

 jugation; an abnormal process, 102 

 Figs. S, 9. Xanthidium tetbacentrotum, front and end vi^-ws ln'i 

 " 10, 11. " KECTOCORNUTDM, front and end views, . 102 



