EXPLANATIONS AND REFERENCES, 

 PLATE LVI. 



Figures magnified 875-500 diameters. 



PAGE. 



FlgS. 1,2. MlCRASTERIAS SPECIOSA, , . . . .38 



Fig. 3. MlCRASTERIAS APICULATA ... .39 



Figs. 4, 5. MICRASTERIAS CRUX MELETENSE, . . . .40 



Fig. 6. MlCRASTERIAS RABENHORSTII, Var., . . 40 



Figs 7, 8. CYL,INDRCOYSTIS TUMIDUM, . . . . .23 



Fig. 9. XANTHIDIUM FASCICULATUM, Var. Subalpinum, . 34 



Figs. 10. 11. XANTHIDIUM COLUMBIANUM, ... .34 



Fig. 12. CCYLINDKOCYSTIS DE BARYI, .... 27 



Figs. 13, 14. XANTHIDIUM TORREYI, . . . . 35 



