Apr .-Sept., 1914 
Illustrations 
IX 
Head Smut of Sorghum and Maize 
Page 
Plate XXXI. Fig. 1.—Head smut in ear of maize. Fig. 2.—Head smut in 
tassel of maize. 372 
Plate XXXII. Fig. 1.—The three American species of sorghum smut on 
Blackhull kafir: (a) Sphacelotheca cruenta, (b) Sorosporium reilianum , (c) 
Sphacelotheca sorghi. Fig. 2.—Head smut, Sorosporium reilianum (Kuhn) 
McAlp., on "sumac ” sorgo, San Antonio, Tex., October, 1913. 372 
Plate XXXIII. Fig. 1.—Section through young sorus, showing hyphal aggre¬ 
gates preceding spore formation. Fig. 2.—Section through immature sorus. 
Note the fibrovascular bundle on the left, about which the spores, none of 
which were as yet quite mature, were developing in groups even in the 
earliest stages. 372 
Plate XXXIV. Fig. 1.—Growth on carrot agar at various temperatures; 
cultures about 6 weeks old. Figs. 2 and 3,—Twenty-two days' growth on 
synthetic glucose agar (fig. 2) and on carrot agar (fig. 3). Fig. 4.—Chlamy- 
dospores formed in culture in peptonized maltose solution. 372 
Plate XXXV. Fig. 1.—Smutted culms of Amber sorgo, showing the charac¬ 
teristic sterility of the main panicle. Fig. 2.—Proliferated head of Black- 
hull kaoliang, with one normal and one smutted head. Fig. 3.—Head- 
smut infection experiment. Control pot (see Table V, plat B, No. 8)on left; 
inoculated pot (Table V, plat B, No. 3) on right, showing three smutted 
plants. 372 
Plate XXXVI. Panicular formation in apex of proliferated sorghum flower. 
longitudinal section, showing presence of hyphae of head smut. 372 
Plate XXXVII. longitudinal sections through the growing points of two of 
the buds indicated in text figures 1 and 2, showing hyphae of the head smut. 
Fig. 1,—Bud 3 of culm Bi. Fig. 2.—Bud 7 of culm N2. 372 
Birds as Carriers of the Chestnut-Blight Fungus 
Plate XXXVIII. Old blight canker on chestnut, showing the work of wood¬ 
peckers. 422 
Plate XXXIX. Series of cultures 9 days old obtained in the test of bird No. 
23, a brown creeper. . 422 
A New Sarcophagid Parasite of Grasshoppers 
Plate XL. Fig. 1 .—Sarcophaga kellyi: Adult male fly, dorsal view. Fig. 2.— 
Sarcophaga kellyi: Head of male, front view. Fig. 3 .—Sarcophaga kellyi: 
Head of male, lateral view. Fig. 4 .—Sarcophaga kellyi: Hypopygium of 
male, lateral view. Fig. 5 .—Sarcophaga kellyi: Left half of main forceps of 
same, ventrolateral view. Fig. 6 .—Sarcophaga kellyi: Lateral view of same. 
Fig. 7 .—Sarcophaga kellyi: Head of female, front view. 446 
Papaya Fruit Fly 
Plate XLI. Fig. 1 .—Toxotrypana curvicauda Gerst.: Female. Fig. 2.— Toxo - 
irypana curvicauda Gerst.: Male.. 454 
Plate XLII. Fig. 1 .—Toxotrypana curvicauda Gerst.: Eggs. Fig. 2.— Toxo¬ 
trypana curvicauda Gerst.: Larva. Fig. 3 .—Toxotrypana curvicauda Gerst.: 
Puparium. Fig. 4.—Papaya fruit infested with larvae of Toxotrypana curvi¬ 
cauda Gerst. 454 
