British Braconidce. 93 



The ? may be separated from that of dimidiatus by 

 the much longer antenna and wings. The ^ is more 

 difficult to distinguish. Eeinhard, after remarking that 

 the identity of the sexes brought together under this 

 species is not free from doubt, discriminates the 3" of 

 (lastemtor as follows : — The eyes are larger than in 

 dimidiatus, and their inferior margin is situated lower 

 down than the upper margin of the oral cavity ; they 

 are also more prominent laterally, causing the vertex to 

 appear somewhat narrowed behind. The mesopleuree 

 are more shining, much more sparingly punctate ; the 

 longitudinal furrow is very faintly impressed and entirely 

 smooth, or it is indicated by a small hardly shining fold. 

 The antennae are usually black. Those of the ? are 

 dull rufous from the base of the 3d joint to about the 

 middle. The wings are distinctly longer than the abdo- 

 men, and subhyaline ; the neuration agrees with that of 

 dimidiatus. The palpi are fuscous, paler at the tips. 



I possess two males with 54-jointed antennae, taken near 

 Abergavenny in June, and four from an osier-bed at 

 Nunton, Wilts, whose antennae are 53-, 55-, 56-, and 58- 

 jointed ; but the ? is unknown to me. 



6. Rliogas gcniculator, Nees. 

 Bracon ruqulosiis, var. /3, Nees, Mag. Ges. Berl., 1811, 



p. 33; <? . 

 Rofjas gcniculator, Nees, Mon., i., 211, S ; Hal., Ent. 

 Mag., iv., 99, 3 ; Eeinh., Berl. ent. Zeit., 1803, 

 p. 2G2, $ ? . 

 Aleiodes gcniculator, Wesm., Nouv. Mem. Ac. Brux., 

 1838, p. 118, 3" ? , pi., fig. 13 (wing) ; Eatz., 

 Ichn. d. Forst., iii., 34, <? ? . 

 Rogas signatus, Nees, Mon., i., 210, 3 . 

 R. anmdipcs, Schiiff., F. G., clvi., 8. 

 R. alternator, Nees, Mon., i., 213, 3 ; Hal., Ent. Mag., 



iv., 100. 

 Aleiodes alternator, Wesm., Nouv. Mem. Ac. Brux., 



1838, p. 119, c? . 

 Rogas hcdtcatus. Cur., B. E., pi. dxii., 3 • 

 Variable; black, orbits behind, abdominal segments 1 — 2, Sat 

 the base, and legs, rufous ; femora and tibiae (except the 1st pair) 

 generally tipped with black. Mesopleurse obscure, rugulose above, 

 and more coarsely sculptured in the wide longitudinal fovea ; a 

 small space behind, next to the metathorax, smooth and shining. 



