996 
VL 
Vib 
VIII. 
IX. 
X. 
XI. 
XII. 
XIII. 
The American Naturalist. [December, 
Teleutoascus of P. graminis, external view, after Lud- 
wig, X 450. 
Teleutoascus of Uromyces fabae, optical section, after 
Ludwig, X 450. 
Teleutoaseus of Uropyxis amorphe, optical section, after 
Ludwig, X 450. 
Teleutoascus of Phragmidium subcorticium, external 
view, after Ludwig, X 450. 
Immature teleutoasci of Phragmidium subcorticium, after 
essey, X 
Germinating teleutospores (still within the ascus) of 
Puccinia graminis ; s. sporidia, after Tulasne, X 400. 
Germinating. teleutospores (still within the ascus) of 
Puccinia moliniae, after Tulasne, X 400. 
Germinating teleutospore (within its ascus) of Uromyces 
appendiculatus, after Tulasne, < 400. 
