BY D. McALPINE. 127 



The hair-like steins are mostly barren, and although several 

 Avere met with, only one terminated in a head. The outer layer 

 is composed of dark brown, almost black, elongated, narrow, 

 transversely septate filaments enclosing more delicate, hyaline, 

 slender, septate hyphae. It seems to resemble a Stilhum, but the 

 absence of reproductive bodies leaves it in doubt. 



EXPLANATION OF FIGURES. 

 Plate XIII. 

 Isaria cicadce, Miq. 

 Fig. 9.— Conidia ( x 1000). 



Stilbum formicarum, Cooke & Mass. 



Fig. 10. — Portion of stem with bead ( X 52). 

 Fig. 11. — External portion of stem { x 1000). 

 Fig. 12.— Conidia (X 1000). 



Stilhum sp. 

 Fig. 13. — Head at end of black bair-like thread ( x 52). 



