ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 287 



2. Marginal vein rarely very long, often punctiform, and always much shorter than the submarginal or 

 subcostal vein ; stigmal vein usually short, rarely long ; scutellum never short or transversely linear ; 



middle tibiae without lateral spurs Subfamily II. Encyetin^. 



Marginal vein long, as long as the submarginal or subcostal vein ; scutellum very short, transversely 

 linear ; middle tibiae with lateral spurs, the apical spur lobed Subfamily III. Signiphorin^. 



Subfamily I. Eupelmin^. 

 1846. Eupelmidse, Family (partim), Walker, Ann. & Mag. Nat. Hist., XVII., p. 114. 

 1856. Eupelmoidse, Familie 4, Forster, Hym. Stud., II., pp. 18, 21 and 30. 

 1875. Eupelmina, Tribus, Thomson, Hym. Skand., IV., pp. 11 and 102. 

 1886. Eupelminse, Subfamil}^, Howard, Ent. Amer., I., p. 198. 

 1897. Eupelminse, Subfamily I., Ashmead, Proc. Ent. Soc. Washington, IV., p. 238. 



This subfamily is quite distinct from the other two subfamilies, and is easily 

 recognized by the structural peculiarities of the mesonotum brought out in my 

 table of subfamilies. 



A full account of the group is given in my paper entitled, " On the Genera of the 

 Eupelminse," published in the Proceedings of the Entomological Society of Wash- 

 ington for 1896. Since that paper was published, however, a new tribe and some 

 new genera have been recognized ; these are characterized below. 



TABLE OF TRIBES. 



Mesonotum in females always depressed or impressed, concave or subcpncave, medially with usually a tri- 

 angular elevation anteriorly, the parapsidal furrows not, or rarely, sharply defined, never short ; in males 

 subconvex, with the furrows rarely complete, not short nor curved off laterally Tribe I. Eupelmini. 



Mesonotum convex in both sexes, the parapsidal furrows delicate, but always complete, short and strongly 

 curved off laterally, the scapulae short Tribe II. Tanaostigmini. 



Tribe I. Ewpelmini. 

 The impressed and incomplete mesonotal furrows in the females distinguish the 

 group. The males are not so readily defined, and are easily mistaken for males in 

 the family Cleonymidse, the mesonotum being sometimes subconvex, with the fur- 

 rows complete or incomplete ; the mesopleura are, however, usually entire and this 

 peculiarity, together with the venation, the structural characters of the head, the 

 antennae and the metathorax, will, in most cases, distinguish these insects. 



TABLE OF GENERA. 



1. Females 2 



Males 37 



2. Hind tibiae and first tarsal joint compressed and broad 3 



Hind tibiae and first tarsal joint neither compressed nor broad (rarely with the hind tibiae slightly com- 

 pressed) 4 



