232 HYMENOPTERA. 



Thorax, the disk smooth and shining, having a central impressed 

 Une and two on each side ; the wings fusco-hyaline, the tegulie 

 testaceous, the nervures ferruginous. The posterior tibia: and 

 all the tarsi clothed with short bright fnlvous pubescence, the 

 claws ferruginous. Abdomen covered with strong elongate 

 l)unctm-es, most dense towards the apex. 



Hab. South Africa. (Coll. the Rev. D. F. Morgan.) 



Genus 20. EXONEURA, n. g. 



(F. Smith's MSS.) 



Head transverse, ocelli placed in a triangle on the vertex ; the 

 labrum obtuse at the apex, about the same length as the mentum; 

 the labial palpi four -jointed, the two basal joints elongate, about 

 equal in length, the two apical ones minute ; the maxillary palpi 

 six-jointed. The superior wings having one marginal and two 

 submarginal cells ; the Urst recm-rent nervure received by the 

 second submarginal cell, the second recurrent nervure and third 

 discoidal cell obsolete; the posterior tibia; having a thin scopa of 

 pubescence ; the claws of the tarsi bifid. 



1. ExONEURA BICOLOR. B.M. ■ 



Female. Length 3 lines. — Head and thorax black, smooth 

 and sliming ; the face delicately punctured, the ocelli very bright 

 and glassy ; the scape of the antennre in front and a line down 

 the clypeus pale yellow-testaceous ; the labrura and mandibles 

 rufo-testaceous, the latter black at their base and apex. Thorax 

 impuuctate, the metathorax rounded, the margins of the tegula- 

 rufo-testaceous, the nervures of the wings ferruginous, palest 

 towards the base of the wings, which are fulvo-hyaline ; the legs 

 ferruginous, the coxae, trochanters and base of the femora black ; 

 the posterior tibia; and all the tarsi clothed with a glittering ])ale 

 fulvous ])ubescence, that on the former stained with fuscous 

 above. Abdomen ferruginous, subclavate ; the basal segment 

 has a central depression, which is black ; the two apical segments 

 very finely transversely reticulate, intermixed with punctures ; 

 the apex acute. 



Var. B. The posterior femora and tibiae black, except their 

 base and apex ; the basal and second segment more or less 

 stained with fuscous. 



Hab. Australia (Swan River) ; Van Diemen's Land. 



