British Braconide. 99 
3. Chorebus lymphatus, Hal. 
C. lymphatus, Hal., Hym. Brit., i, p.19; Marsh., 
ib. cit., p. 508, &. 
2 More slender than C.nereidum and C.naiadum. Black ; head 
transverse, subcubic, wider than the thorax, shining ; eyes beset 
with scattered hairs; mandibles and palpi ferruginous. Antenne 
22-jointed, the 2nd joint rufescent. Thorax finely punctulate, 
pubescent; mesonotum having an impressed line in front, and a 
fovea before the scutellum ; metathorax obtuse. Wings hyaline ; 
squamule yellowish ; nervures and stigma dull ferruginous, the 
latter still more attenuated than in C. nereidum ; radial areolet more 
elongate, Legs ferruginous, the tips of the tarsi infuscated. 
Abdomen asin C. nereidum, but less narrowed posteriorly ; 1st seg- 
ment almost twice as long as wide, its tubercles situated before the 
middle. Terebra subexserted. Length, 1} lines. 
Once captured by Haliday in North Ireland, in a grassy 
ditch. 
4, Chorebus navadum, Hal. 
C. naiadum, Hal., Hym. Brit., 1., p. 18; Marsh., ld. 
cit., p. B09, 3 2. 
2 Black: head transverse, a little narrower than the thorax, 
shining, densely pubescent; vertex faintly canaliculate ; mandibles 
dusky ; palpi pale. Antenne 16-jointed, more slender than in 
C. nereidum. Thorax densely pubescent ; mesonotum canaliculate in 
thé middle, sometimes studded with large punctures ; metathorax 
very short, gibbous at the sides, truncate posteriorly. | Wings 
hyaline ; squamule black ; stigma and nervures dull ferruginous; 
the former linear-lanceolate, emitting the radial nervure before 
one-third of its length; recurrent nervure moderately rejected. 
Legs dull ferruginous. Abdomen longer than the head and thorax ; 
1st segment about one-half longer than its apical width ; faintly 
rugulose; 2nd and 3rd forming together an attenuated cone, 
scarcely as long as the following segments united ; these latter are 
strongly compressed like the blade of an oar, vertically. Terebra 
exserted, with slender valves. ¢ Antenna: longer and more slender 
than those of the 9, 20—21-jointed ; stigma and nervures fuscous ; 
legs dull rufopiceous, much longer and more slender. Length, 
12 lines; ¢ 13 lines. 
Taken by Haliday in North Ireland, on the banks of 
rivers and lakes, but not commonly. 
