British Braconidse. 7S 



blackish at the points ; middle of the occiput black ; palpi yellow, 

 AntennoD 24-jointed, the first five joints yellow, the rest black, the 

 3rd and 4th narrowly black at the extremity ; the 5th less clearly 

 yellow than those preceding it. Prothorax yellow ; mesonotum 

 blackish on the 3 lobes, rufescent near the scutellum, in the middle ; 

 the latter also rufescent, convex, forming an elongate triangle ; 

 metathorax brownish at the base, the posterior declivity and the 

 sides testaceous ; it is feebly quadridenticulate posteriorly. Wings 

 hyaline ; squamulae pale yellow ; nervures brownish ; stigma 

 yellowish ; radial areolet ample, elongate-oval, reaching the tip of 

 the wing, [but at first sight appearing incomplete, owing to the 

 tenuity of the radial nervure. Legs yellow ; tips of the tarsi 

 fuscous. First abdominal segment yellowish, with a median rugulose 

 elevation, which is infuscated ; 2nd and following segments yellow- 

 ish, 3-5 surmounted by a large, common, piceous patch ; apical 

 segments yellow. Valves of the terebra black. ^J Unknown. Length, 

 Ij ; exp. 3 lines. 



A single specimen was taken by Bignell in the 

 neighbourhood of Plymouth. 



VII. PACHYLOMMATID^E. 



This division was omitted in Trans. Ent. Soc. 1885, 

 p. 11, as not belonging to the Braconidge. I possessed at 

 that time no specimens, and relied upon the opinions of 

 some of the best authorities in excluding the single and 

 remarkable genus PacJiylomma from the subject of these 

 papers. The history of the genus shows how crucially it 

 has tested the discretion of systematists, and what differ- 

 ent situations have been assigned to it by some of the 

 most eminent writers on entomology. De Brebisson, the 

 author of the genus, referred it to the Ichneumonidm : 

 Latreille, Westwood, and Haliday, placed it among the 

 Uvaniidie : Forster, Curtis, Ratzeburg, Nees v. Esenbeck, 

 Brulle, Giraud, Ashmead, and Haliday himself (in his 

 later writings), united it to the Braconidge. There appears 

 then to be a preponderance of testimony in favour of this 

 last opinion, which induces me to introduce PacJiylomma 

 in this place as a supplementary group, remarking at the 

 same time that its association with any one of the three 

 families is not wholly free from objections, some of which 

 may here be briefly stated : 



From the Ichneumonidie it is distinguished by wanting 



