EXPLANATIONS AND REFERENCES, 

 PLATE CXLTX. 



Figures magnified 300 diameters. 



PAGE. 



Fig. 1-5. GONATONEMA VENTRICOSUM, ... . 233 



" 6-7. PLEUROCARPTS COLUMBIANUS, . . . 232 



Figs. 8, 9. PLEUROCARPUS MIRABILJS, ordinary sterile form, . . 232 



Fig. 10-13. " " fruiting specimens, . . 232 



" 14-15. " " sterile filaments, . . .232 



