ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 257 



28. Antennae 10- or 11-jointed 30 



Antennae 12-jointed. 



Wings not variegated 29 



Wings variegated Trichoxenia Kirby. 



29. Metathorax long, with a long i^rojection ou each side posteriorlj' ; subcostal vein ending in a knob, the 



marginal and stigmal veins not developed Hybothorax Ratzeburg. 



Metathorax short, ending in two long divergent spines ; marginal and stigmal veins present. 



Kriechbaumerella Dalla Torre. 



30. Antennae 10-jointed (or 11-jointed with a ring-joint) Hippota Walker. 



Tribe V. Dirhmini. 



This tribe is distinguished from all the others by having the head deeply emar- 



ginate and horned. The antennae are inserted close to the mouth as in the 



Haltichellini. 



TABLE OF GENERA. 



1. Female 2 



Males 4 



2. Ovipositor not exserted ; head with tiuo horns 3 



Ovipositor strongly exserted, long; head with /owr horns ; antennae 13-joiuted. 



Hontalia Cameron (type I£. cserulea Cameron). 



3. Metathorax strongly bidentate. 



Antennae 12-jointed Dirhinus Dalman (type D. excavatus Dalman). 



Antennae 13-jointed Eniaca Kirby (type Chrysis hesperidum Rossi). 



4. Head with two horns 5 



Head with four horns. 



Metathorax without teeth ; antennae 13-jointed Hontalia Cameron. 



5. Metathorax strongly bidentate. 



Antennae 12-jointed Dirhinus Dalman. 



Antennae 13-jointed Eniaca Kirby. 



Family LXIII. EURYTOMIDiE. 



1830. Cynipsida Leach, Edinb. Encyc, IX., p. 144. ■ 



1833. Eurytomidte, Family L, Walker, Ent. Mag., I., p. 12. 



1840. Eurytomides, Subfamily 2, Westwood, Intro. Mod. Class. Ins., II., p. 166 ; 



Synop., p. 66. 

 1846. Eurytomidse, Family 3, Walker, List Chalc. Brit. Museum, i., p. 8. 

 1856. Eurytomoidse, Familie XIL, Forster, Hym. Stud., ii., pp. 19, 23, 44. 

 1875. Eurytomina, Tribus, Thomson, Hym. Skand., IV., pp. 11, 25. 

 1886. Eurytominse, Subfamily, Howard, Ent. Amer., I., p. 19. 

 1897. EurytomidEB, Family LXIII, Ashmead, Proc. Ent. Soc. Wash., IV, p. 245. 



On account of the diversity of habits among the various groups composing this 

 family it is one of the most interesting of all of the families in this great complex 

 to study, except possibly the family Agaonidse. 



