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RUWENZOEI EXPEDITION REPORTS. 



13. HYMENOPTEEA. 



By the late Col. C. T. Bingham, F.Z.S. 



Eeoeived November 13, read November 17, 1908. 



Family IcHNEUMONiDiE Leach. 



Genus Lactolus Cam. 



1. Lactolus sp. 



One specimen from Salt Lake, S.E. Ruwenzori. 



Genus Osprynciiotus Spin. 



2. OSPHTNCHOTUS FLAViPES Brulle, Lepel. Hist. nat. Insect. Hymen, iv. p. 135 (1846). 

 One specimen from Mubuku Valley, E. Ruwenzori, 7000 ft. 



Family Braconid.e Newm. 



Genus Iphiaulax Forst. 



3. Iphiaulax rufithorax, sp. n. 



8 . Head, antennse, the intermediate and posterior tibiae and tarsi, and the sheath 

 of the ovipositor black ; the posterior trochanters and femora and the abdomen on the 

 upperside a beautiful brilliant purplish-blue ; the base of the mandibles, the thorax, 

 the whole of the anterior legs, the coxse, trochanters and femora of the intermediate 

 legs, and the coxse only of the posterior legs dark red ; abdomen on the underside 

 yellow with lateral blotches of dark brown; a spot on the underside of the 

 posterior coxae also brown, the tip of the posterior trochanters red ; wings purplish- 

 brown, with a short broad hyaline streak in the 1st cubital cell continued below into 

 the ord discoidal cell, tegulse red, nervures brown. Head rounded ; face below the 

 bases of the antennae closely and finely punctured and raised into a short vertical 

 carina, front above the bases of the antennae, the scape, the occiput and area behind 

 the eyes smooth, polished, and shining, flagellum of the antennae opaque. Thorax 

 massive, smooth, and shining ; mesonotum convex ; scutellum raised slightly, sub- 

 pyramidal ; median segment roundly sloped posteriorly and at the sides. Abdomen 

 comparatively broad, generally smooth and polished, with strong transverse serration =i 

 between the segments; basal segment strongly laterally margined, deeply grooved 



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