British Braconidce. 173 



scutellum punctulato ; metathorax short, inclined from the base to 

 the apex, rugulose, tricarinate, quadridenticulate at the sides. 

 Wings whitish hyahne, stigma and nervures fuscous, or ochreovis, 

 and in that case the costa and parastigma are darker ; squamuke 

 piceous ; parastigma somewliat enlarged, cutting off the angle of 

 the prsediscoidal areolet. Legs short and stout, obscure, the fore 

 pair palest ; hind femora in the middle, their tibiae at the apex, 

 usimlly infuscated; coxae fuscous. Abdomen as long as the thorax, 

 compressed posteriorly, oblong above, triangular when viewed 

 laterally ; 1st segment subrectaugular, twice as long as broad, 

 somewhat constricted at the base, margined, punctate-striate, with 

 2 faint medial carinas ; tubercles somewhat saheut before the 

 middle ; suturiform articulation visible ; segments 2 — 3 together 

 longer than the 1st ; segment 3 faintly punctulate. Terebra 

 decurved, the valves stout at the base, about as long as | of the 

 abdomen. 



(J . Similar ; antennae slender, filiform, longer than the body, 

 19 — 20-jointed. Parastigma smaller, not cutting off the angle of 

 the praediscoidal areolet. Second abdominal segment sometimes 

 testaceous ; abdomen more slender ; legs much longer. Length, 

 1^ ; wings, 3 lin. 



Not common ; I possess a <? from Lastingham, York- 

 shire, and a ? from St. Albans. They are much larger 

 than B. humilis, Nees, and quite distinct ; the want of 

 specimens seems to have caused a difficulty to Euthe, 

 who had only one ? . Wesmael's humilis is probably 

 made up of the present species and humilis, Nees ; but 

 the description of the latter is so concise that there 

 hardly remains anything to trust to except size. 



8. Blacus trivialis, Hal. 



Blacus trivialis, Hal., Ent. Mag., iii., 122, ^ $ . 



B. instahilis, Euthe, Berl. ent. Zeit., 1861, p. 149, J" $ . 



Black ; mandibles rufescent ; palpi pale fuscous. J antenna) 

 stout, subfiliform, about :} as long as the body, incrassated towards 

 the ajjex, 17-jointed, the 4 ante-ajjical joints globose. Metathorax 

 punctato-rugose, tricarinate, more or less obtusely bidenticulate. 

 Wings ample, hyaline; stigma and nervures stramineous; costa, 

 radix, and squamulae fuscous ; radius slightly curved in the middle, 

 making the radial areolet subovate ; anterior angle of the prte- 

 discoidal areolet truncated by the enlarged parastigma. Legs 

 slender, rufo-testaceous ; hind coxtB black, their femora usually 

 infuscated : tarsi fuscous at the apex. Abdomen longer than the 



