ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 337 



TABLE OF SUBFAMILIES. 

 L Submarginal vein entire, not distinctly broken, or interrupted before uniting with the marginal vein, and 

 usually distinctly longer than the marginal ; stigraal vein long, distinct, rarely very short, the post- 

 marginal vein always present 3 



Submarginal vein broken, or interrupted before uniting with the marginal vein, and most frequently, 

 but not always, very short ; stigmal vein not or rarely long, usually very short, the knob most 

 frequently subsessile or subpetiolate, the postmarginal most frequently wanting or very short, rarely 

 long 2 



2. Submarginal vein very short, the marginal vein very long, the postmarginal vein variable, often very 



short or only slightly developed ; metapleura very small ; abdomen often petiolate, but sometimes 



sessile or subsessile Subfamily I. Entedonin^. 



Submarginal vein not very short, usually longer than the marginal, the postmarginal vein always 

 wanting ; abdomen usually sessile, rarely petiolate. 



Stigmal vein very short, nearly obsolete, its knob sessile or subsessile ; mesopleura usually 



without a femoral furrow Subfamily II. ApHELiNiNiE. 



Stigmal vein distinct, never subsessile, usually long ; mesopleui-a always with a distinct femoral 

 furrow Subfamily III. Tetrastichin^e. 



3. Mesonotum with the parapsidal furrows complete, distinct, entire Subfamily IV. Elachertin^. 



Mesonotum with the parapsidal furrows wanting or incomplete, at the most only slightly indicated 



anteriorly Subfamily V. Etjlophin^. 



Subfamily I. Entedonin^. 

 1897. Entedoninse, Subfamily I., Ashmead, Proc. Ent. See. Washington, IV., p. 236. 



The usiiall}^ very long marginal vein, the usually very short stigmal vein, 

 which is rarely long, the very small metapleura, and peculiarities in the shape of 

 the head and abdomen, impossible to describe in detail, but which the trained eye 

 recognizes at once, must be depended upon to distinguish the group. 



The subfamily may be divided into four distinct tribes or minor groups. 



TABLE OF tribes. 



1. Tarsi in both sexes 4-jointed ; funicle 5-jointed or less ; antennte lO-jointed or less 2 



Tarsi in female 5-jointed, rarely heteromerous, in male 4-joiuted ; funicle 6-jointed ; antennae 11-jointed 



or more, never 10-jointed or less Tribe I. Tetracampini. 



2. Parapsidal furrows complete, distinct. 



Abdomen sessile or subsessile, never distinctly petiolate Tribe II. Omphaliui. 



Abdomen distinctly petiolate Tribe III. Entedouini. 



Parapsidal furrows incomplete, at the most indicated only anteriorly Tribe IV. Pediobiini. 



Tribe I. Tetracampini. 

 1856. Tetracampoidse, Familie, Forster, Hym. Stud., II., p. 79. 

 1878. Tetracampina, Tribus, Thomson, Hym. Skand., V., p. 181; 



This tribe approaches nearest to the Omphalini; the body is rather narrow and 

 elongate, the abdomen in the female being usually longer than the head and thorax 



