British Braconidce. 51 



1. XenarcUa lustrator, Hal. (PL I., fig. 3). 



Colastes lustrator, Hal., Ent. Mag., iv., 58, ^ . 



Black ; the palpi and legs pale yellow ; abdomeu fuscous, testa- 

 ceous in the middle ; stigma large, elliptical, blackish, emitting 

 the radius between the middle and the apex. $ . Length, 1^ ; 

 wings, 23 lin. 



Head black, very shining, the front slightly protuberant : 

 antennae rather longer than the body, 29-jointed, fuscous, paler at 

 the base : mesothoracic lobes well marked, convex, the sutures 

 punctulate ; metathorax punctulato-rugulose, with an inchoate 

 carina at the base : abdomen as long as the head and thorax, 

 depressed, widest at the base of the 2d segment : 1st segment 

 fuscous, a little longer than its width, longitudinally striolated, 

 the margins flavescent at the apex (not in my specimen) ; 2d and 

 3d segments of equal length, the former striolated like the 1st, and 

 fuscous above ; the place of the suturiform articulation is denoted 

 by a smooth transverse impression ; apex of segment 2, and 

 segments 3 — 4 entirely, testaceous, the remainder pitchy : tarsi 

 fuscous at the apex : wings hyaline. 



One (? taken in North Ireland by Haliday, another 

 by me in the New Forest, and a third in Leicestershire. 

 Considerably resembles a male Bracon, but must be 

 carefully distinguished by structure. The occiput is 

 almost invisibly margined, again showing the insufficiency 

 of this character for systematic division. 



iii. Bathystomus, Fdrst. 



Forst., Verb. pr. Eheinl., 1862, p. 235. 



Suturiform articulation obsolete. Recurrent nervure inserted 

 in the 2d cubital areolet ; radius springing from the middle of the 

 Btigma : pobrachial areolet of the hind wing half the length of the 

 prsebrachial. Mesothoracic sutures obsolete. Third joint of the 

 palpi minute, as in Bliyssalus. 



1. Bathystomus funestuSy Hal. (PI. I., fig. 4). 



Colastes funesius, Hal., Ent. Mag., iv., 93, ^ . 



(? . Black ; palpi and legs pitchy-testaceous. Wings sub- 

 hyaline, stigma and nervures fuscous. First abdominal segment 

 bicarinated. $ . Disk of mesothorax, abdominal segments 1 — 2, 

 and the others at the hind margins, rufo-testaceous ; lateral mar- 

 gins of segment 2 blackish. Length, J 1^; wings, 3 lin. 



Antennae ^ 32-jointed, in Haliday's specimen, as long as the 



