386 REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION* 
PLATE IV. 
HELIOTHI8 ARM3GERA. 
(After Glover.) 
Fig. 1. Egg, natural size, as deposited on the out- 
side of the involucel or ruffle. 
Fig. 2. Holes eaten through the involucel and 
corolla by the young boll worm, before 
tho flower bud has matured into the 
perfect flower. 
Fig. 3. Young boll worm eating stamen, &c, and 
causing its destruction. 
Fig. 4. Frass dropped by young worms. 
Fig. 5. Hole eaten through the bottom of flower 
into the embryo seed vessel or boll. 
Fig. 6. Young worm eating interior of young 
boll. 
Fig. 7. Pistils and stamens destroyed by attack 
of young worms, and frequently the 
cause of non-impregnation. 
Fig. 8. Young flower-bud as attacked by the 
young worm, with the interior eaten 
out. 
Fig. 9. Same, as fallen; the involucel always, in 
planters' phrase, " flaring open." 
Fig. 10. Full-grown into full- 
grown boll — hence another common 
name, "Bore Worm." 
Fig. 11. Parenchyma or cellular tissue of the leaf 
as eaten by the caterpillar the third 
day from the hatching of the egg. 
Fig. 12. Hole eaten through the involucel the fifth 
day. 
Fig. 13. Size of worm before shedding its first skin. 
Fig. 14. Young worm eating the calyx the sixth 
day, sheltered by the involucel or 
ruffle. 
Fig. 15. Size of worm after first molt. 
Fig. 16. Young worm eating the flower bud, the 
ninth day. 
Fig. 17. Size of worm after the second molt. 
Fig. 18. Young worm eating into the young boll, 
the fourteenth day. 
Fig. 19. Size of worm when molting the third 
time, showing the worm in the act of 
shedding the skin. 
Fig. 20. Full-grown boll worm, with hole eaten in 
seeds of boll after shedding skin the 
fourth time (nineteenth day), with 
frass in the boll. 
Fig. 21. Boll cut open longitudinally to exhibit in- 
jury. 
Fig. 22. "Worm, natural size, after shedding skin 
the sixth time. 
PLATE V. 
LEUCANIA UNIPUNCTA. 
(Original.) 
Fig. 1. Glistening secretions which often show 
where eggs are laid between fold of 
green leaf. 
Fig. 2. Young larva. 
Figs. 3, 4, 5. Full-grown larva?, ventral, dorsal, and 
lateral views. 
Fig. 6. Larva, showing Tachina eggs near head. 
Fig. 7. Pupa. 
Fig. 8. Moth with wings expanded. 
Fig. 9. Moth showing normal position of wings. 
when closed, back view. 
Fig. 10. Pale specimen of moth from side. 
PLATE VI. 
ANATOMY OF ALETIA XTLINA. 
(Original.) 
Fig. 1. Longitudinal section of larva : M, mouth ; 
o,6,c, legs; St., stomach; Sal., salivary 
gland; d. v., dorsal vessel; m. r.,mal- 
pighian vessels ; In., intestine; R, rec- 
tum; 1, 2, 3, 4, 5, false legs ; br, brain ; 
9, 9, ganglia. 
Fig. 2. Second prolog. 
Fig. 3. Hook of prolog* 
Fig. 4. Third right leg. 
Fig. 6, Terminal hook or claw of same leg. 
Fig. 7. Wall ot the stomach, the epithelium re- 
moved: tr, trachea; I, I, longitudinal 
muscles. 
Fig. 8. Cutieula from a dark band of larva. 
PLATE VII. 
ANATOMY OF ALETIA XYMNA. 
(Original.) 
FlG. 1. Longitudinal section of head of larva: M, 
month ; /, frontal ganglion ; br, brain ; 
8, Hub(CHo]>}iageal ganglion; Gl., first 
abdominal ganglion ; Oe., (esophagus ; 
Sp., salivary tubercle or spinneret. 
Fir.. 2. Longitudinal section of head of imago I 
m l ,iri*,m*, muscles ; mx, maxilla); Sal., 
salivary duct; P., palpus; Oe., oeso- 
phagus ; Br, brain. 
