British Braconidiv. 25 



description of the wings is made from J/, nervosus ; in the other 

 species the characteristic part of the neuration is colourless and 

 indistinct, the cubital and radial areolets entirely disappearing. 

 Some males having the 2nd cubital areolet badly defined are hardly 

 distinguishable from those of the following genus, which however 

 may be separated by the form of the stigma. Abdomen of the ? 

 spathulate, suborbicular ; or else lanceolate, enlarged in the middle ; 

 1st segment slender, linear. Terebra curved downwards, its valves 

 acutely pointed, and dilated at the base beneath, so as to resemble 

 somewhat a plough-share. 



The three species are far from common, and difficult to 

 find, occurring on aquatic plants in marshes. 



Table op Species. 



(2) 1. Second cubital areolet complete and dis- 



tinct 1. nervosus, Hal. 



(1) 2. Second cubital areolet obsolete as to its 



exterior half , or entirely effaced 3 



(4) 3. Face, prothorax, pectus, and tip of the 



abdomen, rufo testaceous ; the rest of 



the head, and the disc of the thorax, 



black ; abdomen brown, testaceous at 



both ends 2. paluduw. Marsh. 



(3) 4. Face, prothorax, pectus, and tip of the 



abdomen, black ; the rest of the abdo- 

 men pale 3. caricis, Hal. 



1. Monodonus nervosus, Haliday. 



Aphidiiis {M.) nervosus, Hal., lib. cit., 488, $ ; M. nervosus. 

 Marsh., lib. cit., p. 548, $ . 



5 Black : antennaj 16-jointed, testaceous towards the base, 

 the scape fuscous. "Wings obsciire ; stigma pale brownish ; 

 nervures stout, fuscous. Legs ferruginous, hind femora infuscated. 

 First abdominal segment blackish, 2nd pale brown ; the rest blackish. 

 Valves of the terebra brown. ^ Unknown. Length, | ; exp. 1| 

 lines. 



Only two females were known to Haliday, the author of 

 the above description; the species has not occurred since. 



2. 3Ionoctonus paludum, Marshall. 

 M. paludum. Marsh., I. c., $ , pi. xviii,, f. 2. 



$ Oral parts and palpi testaceous. Antennse shorter than the 

 body, 13-jointed, black, with the 1st joint 'and the base of the 2nd 

 testaceous. Metathorax brown, posteriorly rufescent. Wings hyaline; 



