242 ICHNEUMONIDjE. 



radix and teguhe testaceous, stigma piceous and the bifenestrate 

 second recurrent nervure emitted by the cubital far beyond the 

 submarginal ; first recurrent of hind wings emitting the nervellus 

 almost from its junction with the posterior nervure. 



Length 5| millira. 



SIKKIM : Eungarum, 5700 ft., iv. 1900 (Col. Bingham). 



Type in the British Museum. 



This very distinct species may be known from all others by the 

 structure of its flagellum. Described from a single specimen. 



Tribe BANCHIDES. 



In spite of all that has at various times been written by 

 Holmgren, Thomson and other authors to the contrary, I am 

 still of the opinion expressed in my volume on the British 

 PIMPLIN^;, that this aberrant group of Ichneumons bears features 

 of closer relationship with certain PIMPLIN^E than with the 

 OPHIONIN^E or TRYPHO:NINJE, among which they are usually placed. 

 On the one hand, they resemble Accenitus in the subsessile abdo- 

 men, narrow wings and elongate legs, and, on the other, their 

 relationship with the Lissonotid genus Meniscus is well attested 

 by Gravenhorst, who described the same insect, under different 

 names, in both groups. The rhomboidal areolet, which character 

 is somewhat strained in the Oriental representatives, and sub- 

 sessile abdomen exclude them from the ICHNEUMOXINJE and 

 CRYPTINJE ; the lack of a distinct petiole also will not permit of 

 their inclusion in the OPHIONIN^E ; and the distinctly exserted 

 ovipositor of at least Tegona and Exetustes, seems to preclude 

 them from the TBTPHONIN^:, wherein the anus is never distinctly 

 compressed as in Banchus, though this feature is met with to a 

 modified extent in the AC.ENITIDES. They appear to be parasitic 

 exclusively on the Lepidoptera, among which they evince a 

 predilection for the NOCTUID^E. 



Table of Genera. 



1 (2) Tarsal claws not pectinate EXETASTES, Grav., p. 243. 



2 (1) Tarsal claws more or less distinctly 



pectinate below. 



3 (8) Frons simple ; areolet irregularly 



rhomboidal. 



4 (5) Clypeus elongately produced ; cheeks 



longer than base of mandibles .... TEGONA, gen. n., p. 251. 



5 (4) Clypeus of normal length ; cheeks 



shorter than base of mandibles. 



6 (7) Eyes internally broadly emarginate; 



nntauli elongate BANCHTTS, F., p. 253. 



7 (6) Eyes internally entire ; notauli 



wanting FINTONA, Cam., p. 257. 



8 (3) Frons bidentate ; areolet irregular and 



internally produced EPONITES, Cam., p. 258. 



