Description of the Figures. xv 



134. Basidium of same bearing numerous small spores, X 



650. 



Plate YIII. 



135. ProtomycUes protogenes, W. Sm., single sporangium, 



preserved in the rootlet of a fossil Lepidodendron 

 from the coal-measures, x 400. (After W. G. Smith.) 



136. Peronosporifes antiquafius, W. Sm,, numerous sporangia 



and mycelium in the vascular axis of a Lepidodendron 

 from the coal-measures, X 400. (After W. G. Smith.) 



137. Peronosporites aniiquarius, W. Sm., in Lepidodendroid 



bark from the coal-measures, Halifax, x 320. (After 

 Williamson.) 



