British Braconidx. 21 



but the neuration of the "wings suffices to separate them. 

 It is difficult to determine any one of the three English 

 species without possessing the others for the purpose of 

 comparison. Wesmael, unacquainted with the writings 

 of Haliday, named this genus Elassus (1835). 



Table op Species. 



(2) 1. First abdominal segment subrectangular, 



shorter and broader than iu the two 



following species, twice as long as 



broad, gibbous at the base, with spirac- 



ular tubercles situated before the 



middle 1. mlldus, Haliday. 



(1) 2. First abdominal segment linear, three 



times as long as broad ; spiracular 



tubercles situated in the middle 3 



(4) 3. Stigma narrow, attenuated and much 



elongated inwards 2. lacertosug, Haliday. 



(3) 4. Stigma broader, less attenuated and 



elongated inwards 3. pl(igiatoi;'Sees. 



1. Ephedrus validics, Haliday. 



Aphidms {E.) validus, Hal., lib. cit., 48-5, $ $ . 



B. validus, Marsh., lib. cit.y p. 542 ; ^ ^ , pi. xvii. f. 5. 



2 Form much shorter than that of the other species ; body- 

 pubescent, pitchy black with a paler spot in the middle of the base 

 of the 2nd segment. Head punctulate. Antennte shorter than those 

 of sp. 2 ; 3rd joint testaceous. Thorax punctulate. "Wings sub- 

 liyaline or slightly infumated ; stigma pale brown, narrower than 

 that of sp. 3, broader and shorter than that of sp. 2. Legs ferru- 

 ginous. Abdomen oblong, lanceolate ; 1st segment blackish, granu- 

 lated, not shining. Valves of the terebra stout, black, elevated at 

 the extremity, in form somewhat resembling a plough-share. ^ 

 Similar ; antennte entirely black. Length, 1 j ; exp. 2h lines. 



A rare species according to Haliday, described from 

 three specimens in the old collection of the Ent. Soc. of 

 London. Reared by Bignell from Myzus cerasi, Fab., the 

 common black puceron of the cherry tree. 



2. Bphedriis lacertosus, Haliday. 



Aphidius {E.) lacaiosus, Hal., lib. cit., 486, ^ $ . 

 E. lacertosus. Marsh., lib. cit., p. 543, $ $ . 



9 Black, shining, pubescent. Antennte black, with the 1st joint 

 ferruginous, the 3rd very long. Wings longer tlian in sp. 3, 

 slightly infumated ; nervures brown, stigma pale, yellow during 



