KNOWLEDGE OF THE BRITISH BRACONIDA. 123 
be more correct to say that the segment is centrally narrowly 
testaceous. 
As the male does not appear to have been noticed before, I 
subjoin the following description from ten specimens in my 
collection :— 
Mesothorax testaceous, or fuscous, with the disc testaceous, 
scutellum testaceous, metathorax black (fuscous in pale specimens), 
rugose; abdomen piceous with the second segment and base of the 
third testaceous, the second often fuscous at the sides, petiole basally 
pale, first segment striated, tracheal groves obsolete, tubercles 
apparent ; legs testaceous, all the tarsi fuscous, posterior coxe and 
femora at apex fuscous, posterior tibz fuscous, basally pale, all the 
claws dark; head scarcely as wide as the thorax, occiput fuscous (in 
pale specimens testaceous), orbits, clypeus, and cheeks testaceous, face 
fuscous, palpi pale, antennz setaceous, slightly longer than the body, 
fuscous, 30-33-jointed, usually 32; wings infumated, stigma and 
nervures fuscous, recurrent nervure interstitial or subinterstitial, 
second cubital areolet slightly narrowed towards the radius; length 
44 mm. to 6 mm., expands 8 mm. to 10 mm. 
In the female the antenne are about equal in length to the 
body, 30-83 jointed. 
Var.female. First abdominal segment dark fulvous without 
noticeable dark triangular patches at the sides — M. decoloratus 
(Ruthe). 
A solitary parasite of larve of Lepidoptera; it varies 
greatly in size. I have a female, bred from a larva of 
Brachionycha (Asteroscopus) sphinx, June 28th, 1911, which 
expands no less than 11} mm. 
The cocoon ig pendulous, shining, and of a rather rich brown 
colour, though not nearly so dark as that of M. versicolor. Two 
specimens which I must refer to this species, bred from larve of 
Nola cuculatella, made cocoons of a paler colour, similar to those 
of AM. pulchricornis. From six to fourteen days in the cocoon. 
Among other dates I have bred it from larve of Macrothylacia 
rubi, August 1st, 1911; Nola cuculatella, June 21st, 1911; 
Anarta myrtilli, August sth, 1911; Ematurga atomaria, July 30th, 
1911; Cheimatobia ‘brumata, June 19th to 27th, 1911, and Agrotis 
agathina (Sand banks, Poole), June 28rd to 30th, 1913. 
From a single cocoon of this species I bred on August 17th, 
1911, some thirty or forty small hyperparasites. Dr. R. C. L. 
Perkins, to whom I submitted them, has been most kind in 
working them out, and says (in litt. January 15th, 1914): ‘‘ The 
very minute species is certainly Closterocerus (Westwood), but 
the wings are not marked in black as in all described species 
known to me. It is quite likely that species with similar wings 
have been wrongly described in EHintedon or Eulophus, as the 
marked wings have been considered a generic character. The 
antenna is that of a true Closterocerus.” 
