A, B.—Portions of teosinte leaves showing lesions of Ophiobolus heterostrophus. Photographed 
from dried specimens originating from the vicinity of Los Banos, P. I., September, 1918. 
C. —Portion of maize leaf showing numerous lesions of O. heterostrophus and a much larger lesion 
caused by Ilelminthosporium turcicum on the upper left margin. Photographed from dried speci¬ 
mens collected near Los Banos, P. I., July, 1918. XH 
D. —Portion of maize leaf showing numerous lesions of 0. heterostrophus and a part of two moder¬ 
ately extensive lesions caused by H. turcicum, one immediately adjacent and to the right of the- 
midrib, the other toward the left margin. The border of the second lesion is indicated by a dotted 
line for greater clarity. The cracks due to the brittle texture of tissues killed by II. turcicum 
indicate approximately the center of the leaf-blight lesion. Photographed from dried specimens- 
collected near Los Baft os, P. I., July, 1918. X 9$ 
