58 ICHNEUMOKID^. 



Pteudeuyalta might, perhaps, be placed in closer association with 

 Ephialtes. Nor are the limits of the tribe well denned, since 

 some doubt must still be entertained respecting the position of 

 (Edematopsis and the allied genera, in spite of their elongate 

 hypopygium. Their economy, however, is now proved to be 

 related with the Lepidoptera, while that of the present group 

 would appear to be confined to the lignivorous Coleoptera, and we 

 must regard the records of Eatzeburg, and probably also of 

 Giraud, to the contrary, with suspicion. Throughout the parasitic 

 Hymenoptera it will be noted that the head is usually cubical 

 in those genera (e. g. llecabolus, Histeromerus, Cheiropaclms and 

 the present group), which prey upon lignivorous larvaD. With its 

 wealth of forests, arid the Longicorn * and Lamellicorn beetles 

 preying upon their timber, India will prove very rich in Xoridides, 

 though, unfortunately, none have yet been associated with 

 specified hosts. 



Table of Genera. 



1 (8) Areolet of the wing distinct and 



entire. 



2 (7) Areolet broadly sessile and pen- 



tagonal. 



3 (4) Front tibia? neither intumescent 



nor basally constricted AOKNOKA, Cam., p. 59. 



4 (8) Front tibise both intumescent 



and basally constricted. 



5 (6) Clypeus apically dentate ; nieta- 



thoracic spiracles circular. . . . ECHTHRUS, Grav., p. 60. 



6 (6) Clypeus apically rounded; meta- 



thoracic spiracles linear TOUBDA, Cam., p. 01. 



7 (2) Areolet petiolate and triangular; 



clypeus not dentate PSEUDEUGALTA, Ashm., p. 66. 



H (1) Areolet of the wing entirely 



wanting. 

 9 (10) Tarsal claws bifid ; clypeus not 



basally discreted EUGALTA, Cam., p. 70. 



10 (9) Tarsal claws simple ; clypeus 



basally discreted from face. 



11 (12) Abdomen not impressed ; meta- 



notum simple BATHYMKRIS, Cam., p. 75. 



12 (11) Abdomen distinctly impressed ; 



metanotal area? entire XYLONOMUS, Grav., p. 76. 



* Mr. Gahiui informs me that some six hundred and fifty species of this 

 group of beetles hare already teen described, that about eight hundred will lie 

 known when the 'Fauna of India' is completed, but that he estimate* that 

 fully a thousand kinds inhabit India. 



