ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 313 



metathorax and the greater number of joints in the antennae readily separate it from 

 the Eunotinse. 



Large subfamihes, I think, should be separated into tribes, in order to facilitate 

 quicker the recognition of genera and to show better their affinities. 



I have, therefore, recognized /o^tr tribes, based upon the number of teeth in the 



mandibles. 



TABLE OF TRIBES. 



1. Both mandibles not 3-dentate 2 



Both maudibles 3-dentate Tribe I. Metaponini. 



2. Left mandible 3-dentate, the right 4-dentate. 



Antennte inserted on or near the middle of the face, always above an imaginary line drawn 



from the base of the eyes Tribe II. Raphitelini. 



Antennse inserted far below the middle of the face, on or below an imaginary line drawn from 



the base of the eyes ; . .Tribe III. Eutelini. 



Both mandibles 4-dentate Tribe IV. Pteromalini. 



Tribe I. Metaponini. 

 The three dentate mandibles distinguish the tribe. All of the species, so far as 

 the records go, with a single exception, are parasites of coleopterous larvae. 



TABLE OF GENERA. 



1. Females 2 



Males 11 



2. Head triangular, narrowed towards the mouth, eyes large, rounded, convex ; presternum large, meso- 



sternal furrow distinct ; metathoracic spiracles rounded, remote from the postscutellum 3 



Head not triangular, viewed from In front, more rounded, very slightly wider than long ; eyes ob- 

 long-oval or oval ; presternum not large ; mesosternal furrow not distinct ; vertex broad ; meta- 

 thoracic spiracles not rounded 5 



3. Vertex not acute medially 4 



Vertex broad, acute medially, the frons impressed. 



Abdomen conically pointed Etroxys Westwood {E. sccnicus Westw.). 



4. First joint of funicle large, fully twice as long as thick. 



Holcseus Thomson (type Etroxys dichrous Dalm.). 

 First joint of funicle small, not or hardly 1.} times as long as thick. 



Cricellius Thomson (type C. decipiens Thoms.). 



5. Club of antennse not white 6 



Olub of antennse white or yellowish. 



Metathorax short, with a small subglobose neck, punctate, the spiracles small, rounded ; head 

 transverse, wider than the thorax ; antennse inserted near the middle of the face, the flagel- 

 lum subfiliform, the first joint of the funicle the largest. 



Chrysoglyphe Ashmead (type C. api calis Ashva.). 



6. Antennse much thickened toward apex, clavate 10 



Antennse not much thickened toward apex, filiform or at most subclavate 7 



