PULUS TREES: 
PLATES. 
Puate I. Parasites of weevils. Fig. 1—Eurytoma tylodermatis, pupa. Fig. 
—Catolaccus incertus, pupa. Fig. 3.—Cerambycobius cyaniceps, 
pupa. Fig. 4.— Microdontomerus anthonomi, pupa. Fig. 5.—Larva 
of Bracon. Fig. 6.—Bracon mellitor, pupa. Fig. 7.—Larva of chal- 
CLOGIG 58 kee S02 Sec Seed She ee eet on he wee a eee er 
II. The purple mallow (Callirrhoe involucrata), a food plant of two wee- 
vils related to the boll weevil. Fig. A.—The buds and flowers, which 
are subject toattack by Anthonomus fulvus, and the capsule, subject 
to attack of Macrorhoptus estriatus. Fig. B.—Bud infested by 
Anthonomus fulvus. Fig. C.—Flower injured by adult weevil 
Of Anthonomius fultus occa. oft ake eee toe eee ee 
III. Biologies of weevils. Fig. A.—Pepper, showing egg punctures of 
Anthonomus eugenii. Fig. B.—Head of Sideranthus rubiginosus, 
showing cell of Desmoris scapalis. Fig. C.—Pepper, showing larva 
of Anthonomus eugenii in situ. Fig. D.—Head of Sideranthus 
rubiginosus, with larva of Desmoris scapalis in its cell. Fig. E.— 
Section of cotton square, showing pupa of Anthonomus grandis 
and pupa of primary parasite Catolaccus incertus. Fig. F.—Earthen 
cell of larva of Desmoris scapalis. Fig. G.—Desmoris scapalis, 
adult -weevilsiccg. .025: G55. ae eet eee Stes oan eee 
TEXT FIGURES. 
Fia. 1. Bracon mellitor, parasite of boll weevil......--- Pt iene 
. Pediculoides ventricosus, mite enemy of boll weevil..........-.-------- 
SS TGAL PRUs CUICULIONIS =. 725652 caeeen oe ek ee eee ee : 
. Map of Texas, divided into geographical regions and illustrating average 
percentage of parasitism of the boll weevil in all cotton forms... ..-- 
. Diagram of cotton plantation of H. O. Samuel, Dallas, Tex., of 64.4 
acres, showing location of plats where observations and experiments 
on boll-weevil parasitism were made-:......-+--.2 62-005 4ss-+5-5 
6. Occurrence of Catolaceus incertus, Bracon mellitor, Cerambycobius 
cyaniceps, and Eurytoma tylodermatis in Texas and western Louisiana. 
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