Fig. 7. Fi S- 8> 
Explanation of Figures. 
Fig. 7. Type Specimen at Kew. Fig. 8. Spores (x 1000). 
CATASTOMA MUEELERI. 
Fig. 9. 
Fig. 10. 
Fig. 11. 
Explanation of Figures. 
Fig. It. Type specimen at Kew. Fig. 10. Section. Fig. 11. Spores (x 1000). 
CATASTOMA HYALOTHRIX. 
