185 
Plate III. 
SORGHUM PLANT-LICE. 
I 
(Original.) 
1. The Yellow Sorghum Aphis, Chaitophorus jlavus, n.’s., winged 
\ivipaious female ; magnified twenty diameters ; a, antenna 
of the same, more highly magnified. 
2. Chaitophorus flavus, wingless viviparous female; mag¬ 
nified twenty-five diameters. 
3. Chaitophorus flavus, pupa, side view. 
4. The same, dorsal view. 
5. The corn Plant Louse, Aphis maidis, winged viviparous 
female; magnified twenty-three diameters; a, antenna; c 
honey-tube, more highly magnified. 
1 
Plate IY. 
CORN AND SORGHUM INSECTS. 
| 
(Original) 
1. Aphis maidis, wingless female. 
2. The same, pupa. 
3. The same, root form, wingless female. 
4. Schizoneura panicola, from sorghum roots; magnified twenty 
diameters; a, antenna, more highly magnified. 
5. Black-headed Grass Maggot, Sciara, sp.; magnified five 
diameters. 
6. Maxilla of the same. 
7. Mandible. 
8. Labrum, upper surface. 
9. Labrum, lower surface. 
Plate Y. 
j 1* Diahrotica longicornis, imago of Corn Boot-Worm ; magnified 
ten diameters. 
i 2. Corn Boot-Worm larva; magnified six diameters. 
3. Corn root broken across, to show larva within. 
4. Egg of Diahrotica longicornis ; magnified eighty diameters. 
5. Pupa of the same. 
6. The Strawberry Worm, Emphytus maculatus: 1, ventral view 
of pupa; 2, side view of same; 3, enlarged sketch of per¬ 
fect fly, the wings on one side detached; 4, larva crawl¬ 
ing, natural size; 5, perfect fly, natural size; 6, larva at 
rest; 7, cocoon; 8, enlarged antenna, showing joints; 9, 
enlarged egg. (After Biley.) 
