British Braconidse. 
378 
of Ratzeburg. In choosing between the two authors^ 
neither of whom gives an adequate account of the genus_, 
I have preferred the Orthostigma of Ratzeburg, which 
has priority of time in its favour. 
1. Orthostigma J) umila, ~Nees. 
Alysia pumila, ISTees^ Mon.^ i._, 251 ; Hal.^ Eut. Mag., 
v., 242, ?. 
Aphidms ftavipes, Ratz.^ Ichn. d. Forst., i., 52^ pi. vii., 
Orthostigma flavipes , Eatz., tih. cit., ii., 71. 
0. pumilaj Marsh., Species des Hym. d^Eur. et d^Alg.^ 
Bracon., voL ii^ p. 431_, $ ? . 
$ . Pitchy black, shining, often with the 1st abdominal segment 
reddish ; mandibles and palpi testaceous. Antennae moderately 
stout, as long as the body or rather longer, 17-24-jointed, with two 
or three of the basal joints testaceous. Metathorax shining, with 
only a few minute rugosities or (in five examples) entirely smooth ; 
described by Nees as punctulate, by Haliday as rnguiose, inaccurately 
in both cases. Wings hyaline with a slightly obscure tinge, 
iridescent ; squamula testaceous ; nervures and stigma brownish or 
reddish, the latter more attenuated than in the ^ , but varying 
considerably in thickness. Legs rufo- or flavo-testaceous. First 
abdominal segment twice as long as its apical width, very little 
narrowed towards the base, striolate, black, or more or less reddish ; 
the following segments compressed beneath, blackish or piceous. 
Terebra as long as the two apical segments, Similar; antennae 
longer than the body, 23-24- jointed ; stigma stouter, blackish, 
sometimes almost as broad as the 2nd cubital areolet ; legs darker 
red. Length, ; wings, 2|-6 lines. 
Yar. Stigma much attenuated, blackish ; legs obscure, tibia3 
and base of the tarsi paler. Similar to Aspilota niaculipes, Hal. 
Length, hardly 1 line. Haliday. This appears to be 0. hrunnlpes, 
Ratz., Ichn. d. Forst., iii., 70, parasite of Cecldomyia, and reared in 
abundance by Brischke. 
Common. Obtained in August in 1840 in multitudes, 
by Eatzeburg, from larvae of Phora rufipeSj Meigeu. 
These diptera issued in swarms from a decayed mass con- 
sisting of the dead bodies of various caterpillars and 
pupse; at the same time appeared great numbers of their 
parasites. 
