34 PARASITES OF THE COTTON BOLL WEEVIL. 
The breeding records of the parasite are as follows: 
TaBLE X XI.—Breeding records of Microdontomerus anthonomi. 
As primary As secondary 
Total. : F : 
Toate Date. parasites. parasites. 
Male. | Female. | Male. | Female. | Male. | Female. 
1906. 
Cuero Dex oi-e se ee eee ANIPUStOl Saco ce sab sae sse Tl ete eal San gs seal erotica 1 
Goliad exes sees ese ee SeptemiberiSseeena|a ae soe- | yy ee ee Se eee ee 1 
Hallettsville; Texe~ 5. o=. 9 August 30....-.-- Ee eet oe (PPE Alin oe 
ACOMMERA acs e a ees August 28....-..- eer Ieee | PA es, BES AE Dye ws sa aealeeee neue 
DOR scsecaask ee nee = August 29.......-. 2 3 1 3 Lal. aosoneee 
2 11 1 9 1 2 
Thirteen parasites were bred, of which 23 per cent were secondary. 
Owing to numerous expressions of incredulity concerning this dual 
parasitism it may be proper to state the proofs. In the first place, 
primary parasitism has been thoroughly established in the case of 
this species and also in the case of Eurytoma tylodermatis and Ceram- 
bycobius cyaniceps. Adults have been bred from larvee which were 
actually observed to be feeding upon the weevil larve. The devel- 
opmental period of those adults bred precludes any arguments that 
they were bred from unobserved eggs of parasites on the larva. In 
the second place, the Bracon and chalcidoid larve are very easily 
distinguished, so that the notes in most cases stated whether the 
larva observed was a Bracon or a chalcidoid. In no case was one of 
‘the latter bred from a Bracon except when the Bracon cocoon was 
already formed at the time of the observation. Finally, secondary 
parasitism was proved because the parasites were actually bred from 
isolated Bracon cocoons, which were subsequently opened and from 
which the known exuvia of the secondary parasites were removed. 
2. Eurytoma tylodermatis Ashm. This species was bred by Town- 
send in 1895 and by Mally during several years from the boll weevil. 
Ashmead described it as a parasite of Tyloderma foveolatum Say 
(Ashmead, 1896), a weevil breeding in the stems of Onagra biennis 
and also in a species of Epilobium. It was reared by F. H. Chitten- 
den from the larva of Tyloderma foveolatum Say in stems of Onagra 
biennis, September 23, from material collected at Rosslyn, Va. 
This species was bred by the writer from Anthonomus disjunctus 
Lec. breeding in the heads of Heterotheca subaxillaris at Jacksonville, 
Tex., October 13, 1905 (1 male); from Anthonomus squamosus Lec., 
breeding in the heads of (rindelia squarrosa nuda at Clarendon, Tex., 
September 22, 1905 (6 females), and September 26, 1905 (2 males); 
from Orthoris crotchii Lec. breeding in the seed pods of Mentzelia nuda 
at Clarendon, Tex., October 2, 1905 (1 male); and from Lixus mus- 
culus Say, which forms galls in the stems of Polygonum pennsylvani- 
cum, at Clarendon, Tex., October 2, 1905 (2 females), and October 17, 
1905 (1 male). Mr. W. W. Yothers bred this Eurytoma from Lirus 
