122 me. smith's catalogue or hymenopteeotjs insects 



tudinal striae at the base ; wings hyaline and splendidly iridescent, 

 the nervures ferruginous, with the costal nervure and stigma much 

 darker. Abdomen fuscous, with the first, second, and base of the 

 third segments ferruginous. 



Hab. Borneo (Sarawak). 



2. Ophion vestigator. 0. rufo-testaceus, abdomine apice fusco, 

 metathorace subrugoso. 



Female. Length 10 lines. Pale rufo- testaceous : eyes deeply emargi- 

 nate ; wings hyaline and iridescent, the nervures fusco-ferruginous ; 

 the meso- and metathorax rugose ; the four apical segments of the 

 abdomen fuscous and covered with short cinereous pubescence. 



Hab. Malacca. 



G-en. Xylonomus, Orav. 



1. Xylonomus fulgidipennis. X. opacus, niger, antennis flavo- 

 annulatis, alis nigris aureo-fulgentibus, abdomine nigro-chalybeo. 



Female. Length 14 lines. Black and opake : antennae annulated with 

 yellow ; the thorax narrowed anteriorly ; the metathorax large and 

 wide ; the wings dark brown, with a bright coppery effulgence ; the 

 tegulae and two spots at the base of the metathorax obscurely blue. 

 Abdomen blue-black, with bright tints of blue in certain lights. 



Hab. Sarawak. 



I have assigned this fine insect to the genus Xylonomus, to which it 

 appears to belong ; the neuration of the wings and the enlarged meta- 

 thorax connect it with that genus. 



Fam. BEACONID^E, Westw. 

 G-en. Beacon, Fabr. 



1. Bracon aculeator, Fabr. B. ferrugineus, antennis aculeoque 

 nigris, alis flavescentibus, puncto marginali nigro. 



Ichneumon aculeator, Fabr. Ent. Syst. ii. 159. 105. 



Bracon aculeator, Fabr. Syst. Piez. 107. 21. 



Hab. Malacca (Mount Ophir). Borneo (Sarawak). Tranquebar. 



2. Bracon quadriceps. B. capite thorace pedibus anticis et inter- 

 mediis coxisque posticis ferrugineis, pedibus posticis et abdomine 

 nigris, alis fuscis basi hyalinis. 



Female. Length 7i lines. Head, thorax, anterior and intermediate 

 legs, and the posterior coxae, ferruginous ; the head and thorax smooth 

 and shining, the former quadrate ; the clypeus deeply emarginate ; 

 the scape and first joint of the flagellum ferruginous within ; the 

 wings yellow to the apex of the externo-medial cell, beyond which 

 they are fuscous and mottled with a number of semitransparent spots ; 

 the base of the stigma reddish-yellow. Abdomen and posterior legs 

 black ; the first segment of the abdomen at an oblique angle with the 

 following segments, above, with a central and two lateral carinae, out- 

 side of which it is yellow ; the second and third segments lougitudi- 



