ILLUSTRATIONS. 
PLATES. 
Page. 
Plate I. Some of the more important plant-bugs which attack cotton bolls. 
Fig. 1. — The conchuela (Pentatoma ligata). Fig. 2. — The brown 
cotton-bug (Euschistus servus). Fig. 3. — The green soldier-bug 
(Xezara hilar is). Fig. 4. — Thyanta custator. Fig. 5. — Acanthoceph- 
ala femorata. Fig. 6. — The leaf-footed plant-bug (Leptoglossus 
phyllopus). Pig. 7. — The bordered plant-bug (Largus succinct, 
Fig. 8. — The cotton stainer (Dysdercus suturellus). Fig. 9. — Onco- 
peltus fasciatus, showing egg of Tachinid parasite attached to upper 
ride of head between the eyes Frontispiece. 
II. Effects of plant-bug attack on cotton bolls. Fig. 1. — Boll with sec- 
tion of carpel removed to show plant-bug injury. Fig. 2.— Portion 
of full-grown cotton boll showing lock of cotton ruined by destruc- 
tion of seed at apex by Thyanta custator. Fig. 3. — Lint partly 
removed from seeds to show discoloration by cotton stainer {Dys- 
dercus suturellus). Fig. 4. — Decay of seeds in immature cotton boll 
as a result of feeding by plant-bugs; no external evidence of in- 
jury. Fig. 5. — Exterior of cotton boll injured by Calocoris rapidus. 
Pig. 6. — Cross section of immature cotton seed damaged by Penta- 
tomid bugs. Fig. 7. — Inside of carpel of cotton boll showing feed- 
ing punctures by plant-bugs. Fig. 8. — Cotton boll showing exter- 
nal spots referred to on page 16 16 
III. Effects of plant-bug attack on cotton bolls; egg and puparium of 
Tachinid parasite. Fig. 1. — Locks of a cotton boll shriveled by 
the conchuela. Figs. 2-5. — Small Sea Island cotton bolls de- 
stroyed by the cotton stainer. Fig. 6. — Nearly mature Sou Island 
cotton boll opened to show damage by cotton stainer. Fig. 7. — 
Same, with seeds and lint removed to show feeding punctures and 
proliferation due to feeding by cotton stainer. Fig. 8. — Cotton boll 
showing two locks damaged by four and six feeding punctures, re- 
spectively, by the green soldier-bug (Xezara hilaris). Fig. 9. 
Bead and thorax of the conchuela. showing egg of Tachinid para- 
site, Gymnosoma fuligmosa, attached to side of prothorax at left. 
Pig. 10. — Puparium of Tachinid parasite, Gymnosomafuliginosa. . IS 
IV. A cotton plant, showing the bolls injured by the conchuela IS 
Y. Fig. 1.— Egg-hatch of conchuela. showing hatched and unhatched 
eggs. Pig. 2. Egg-batch of conchuela from which 32 Procto- 
trypid parasites ( T< l< nomas aahmeadi) have emerged 26 
TEXT F1QUBX8. 
Fig. 1. The conchuela (Pentatoma ligata): Adult, egg-mass, eggs 26 
2 'Hie conchuela: Nymph, first instar 27 
3. The conchuela: Nymph, second instar 27 
4. The conchuela: Nymph, third instar 28 
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