Britif^h Braconid/i'. 51 



•somewhat spathulate, fuscous to the apex, with the two first 

 sutures testaceous. Length almost IJ ; exp. 2h lines. 



Parasite of Siphonophoo^a granai^ia, Kirby, a puceron 

 infesting an unknown number of GraminaceiB, both 

 wild and cultivated, Secede, Triticum, Holcus, Poa, etc. 

 Bignell bred 11 specimens, including both sexes. 



18. Aphidius crepidis, Haliday. 



A. crepidis, Hal., lib. cit., 94 ; Marsh., lib. cit., p. 581, ^ $ . 

 A. tuberculatus, Wesm., Nouv. Mem. Ac. Brux., 1835 ; p. 



80, ^ (where the remarkable colour of the valves 



of the terebra is omitted). 



9 Fulvo-testaceous, head and thorax black above. Head small, 

 •contracted posteriorly, hardly transverse ; face, oral parts, and apex 

 of the cheeks, testaceous. Antennae 13-jointed, shorter than the body, 

 black, with the two basal joints and the base of the 3rd, fulvous, 

 -which colour is sometimes further extended. On the mesosternum 

 is a large black spot, and another in the middle of the metathorax. 

 The upper portion of the metathorax is occupied by two arese, 

 leaving between them a right angle, the apex of which reaches the 

 base ; this angle forms part of a third area, occupying the middle of 

 the posterior face of the metathorax. Wings hyaline with a 

 cinereous tinge ; nervures brown, distinct ; stigma elongate, fulvous 

 during life, cinereous in dried specimens ; 1st abscissa of the radial 

 nervure curved, originating before the middle of the stigma ; cubital 

 nervure continued to the end of the 1st cubital areolet ; 1st inter- 

 cubital nervure half completed. Legs fulvous, sometimes entirely, 

 more commonly the 4 posterior femora and tibiae (or even those of 

 the forelegs) infuscated on the upper edge ; tarsi infuscated. 

 Abdomen lanceolate ; 1st segment fulvous, somewhat rugulose, wider 

 than usual, twice as long as broad, with salient tubercles, situated 

 not far from the base ; intermediate segments infuscated either on 

 the whole of the disc, or only at the sides. Valves of the terebra 

 -testaceous, streaked with black above, exserted, curved downwards 

 and angularly enlarged beneath. ^ Dissimilar ; black ; antennas 

 rather longer than the body, 16-jointed ; oral parts fulvous ; wings 

 cinereous ; legs infuscated, hind coxae black ; abdomen piceous, 

 •somewhat spathulate ; 1st segment narrow, linear, three times as 

 long as broad, fulvous at the base and sometimes at the extremity 



