British Braconidm. . 43 



jointed, the 1st joint testaceous, the 2nd brownish. Mesonotuni 

 without furrows, smooth, trilobate, each lobe marked with a spot of 

 darker brown than ihe ground colour ; scutellum brown or rufescent, 

 preceded by a paler space ; metathorax carinated in the middle, 

 areated, rufescent. Wings hyaline ; squamulae and radicles yellow ; 

 basal nervures brownish ; stigma and nervures of the characteristic 

 region pale green during life, afterwards testaceous ; cubital nervure 

 complete as far as the end of the 1st cubital areolet. Legs testaceous ; 

 base of hind coxse, with femora and tarsi of the same pair, more or 

 less infuscated. First abdominal segment brown or blackish, acicu- 

 lated, three times longer than broad, linear as far as the tubercles, 

 which are situated below the middle ; condylus somewhat dilated ; 

 the rest of the abdomen fusiform, pale testaceous, each segment bor- 

 dered posteriorly with a darker tint. Valves of the terebra black, 

 straight, moderately stout. ^ Similar, but with darker tints ; 

 antennae longer, about 25-jointed. Length, 1^ ; exp. 2^ lines 



Parasite of Melanoxanthus salicis, L, a large puceron 

 infesting willows, Salix viminalis, and poplars. Observed 

 some years ago by Dr. Knaggs and Mr. McLachlan in a 

 garden at Kentish Town. The pierced Aphides were 

 extraordinarily numerous, crowded together around the 

 base of the leaves on the twigs of willow. One of the 

 observers remarks that he noticed a mass of them 

 composed probably of some thousands, of which each 

 individual must have been stung by an Aphidius. I 

 possess to this day one of the twigs of willow entirely 

 covered with empty skins of the pucerons. Lygocerus 

 carpenteri, Curt, is a hyperparasite of this species. 



10. Aphidius ovsie, Haliday. 



Ichneumon aphidum, De Geer, M^m, ii. 866, pi. xxx. fF, 

 4 — 13. Not of Linne, Panzer, and Blanchard. 

 The rest of the older synonymy is uncertain. 



A. rosse, Hal, lib. cit., 97 ; Marsh., lib. cit., p. 571, $ ? . 



A. cancellatus, Buckton, Mon. of Brit. Aphides, tig. 

 I have not the precise reference at hand. 



A rosarum, var. /3, Nees, Mon., i. 19. 



$ Saffron yellow ; head above, and mesonotura, blackish ; ab- 

 dominal segments 2-3, and often 4-5 infuscated on each side, in the 

 form of interrupted bands or two rows of spots. Oral parts and 

 palpi pale yellow. Antennae 17-18-jointed, shorter than the body 

 and evidently shorter than those of urticaz (sp. 8), black, testaceous 



