Hymenoptera. 261 



Comes near to T. leptogaster. Kohl. It may be known from 

 the Cape T.foveatum., Cam. by the front and vertex being without 

 an area bordered by keels. 



Pison iridipennis, sp. nov. 



Black, the head, thorax and basal segment of al^domen rugosely 

 strongly punctured, the rest of the abdomen more closely and less 

 strongly punctured, the punctuation becoming closer towards the 

 apex ; the pubescence on the head and thorax silvery, on the 

 abdomen silvery, distinctly tinged with golden. Wings hyaline 

 tinged with fuscous, very highly iridescent ; the first recurrent 

 nervure received shortly beyond the transverse cubital, the 2nd 

 interstitial. Male. 



Length 8 mm. 



Clypeus becoming gradually narrowed towards the apex, elid- 

 ing there in a stout, distinct tooth. Hinder ocelli separated from 

 the eyes by about the same distance they are from each other ; the 

 anterior is separated from the posterior by a greater distance than 

 these are from each other. On the centre of the basal half of the 

 metanotum is a wide deep fun-ow ; its basal half irregularly 

 striated, the apical smooth ; the apical furrow is narrower and 

 deep. Legs covered with silvery pubescence. 



Oxyhelus striatiscutis, sp. nov. 



Black, scape of antennae yellow, the fiagellum rufous ; 

 mandibles yellowish at the base, the middle piceous red, the apex 

 black. Tegulae, tubercles, a mark on the basal half of the scutellum 

 on the sides, the lateral spines, broad bands on the sides of the 

 basal 4 abdominal segments and a narrow band on the apex of the 

 5th, pale yellow. All the tarsi and the fore tibiai rufous, the 

 middle tibias yellowish in front, rufous behind, the base of the 

 hind tibiai marked with yellow. Apex of pronotum yellow, 

 transverse. TeguliB yellow in front, blackish behind. Wings 

 hyaline, the nervures black. Female. 



Length 8-9 mm. 



