ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 315 



15. Hind coxiB not small, the hind margin towards base hairy 16 



Hind coxse small, the hind margin not hairy Dirhicnus Thomson. 



16. Antennae with two ring-joints 17 



Antennae with three ring-joints 18 



17. Scutellum posteriorly highly elevated and produced into a spine Acanthometapon Ashmead. 



Scutellum normal, not spined. 



Collar not distinctly separated Stinoplus Thomson. 



Collar narrowed medially Spintherus Thomson. 



18. Pronotum not broad, narrower than the mesonotum 19 



Pronotum broad, as wide as the mesonotum Bruchobius Ashmead. 



19. Flagellum filiform, the joints cylindrical, those of the funicle very briefly pedicellate, hairy but not 



verticillate 20 



Flagellum filiform, the joints of the funicle uodose-veiticillate. 



Metanotum without a median carina ; marginal vein more than twice the length of the stigmal 



vein. Lophocomodia Ashmead. 



Metanotum with a median carina ; marginal vein not or only a little longer than the stigmal 

 vein Psilocera Walker. 



20. Metathorax with the median and transverse carinas usually present, the spiracles oval. 



Metapon Walker. 



Tribe II. Rhaphitelini. 

 In this tribe the left mandible is 3-dentate, the right 4-dentate, as in tlie tribe 

 Eutelini, from which it is, however, easily distinguished by the insertion of the an- 

 tennee ; these are inserted on or near the middle of the face, and iwt low down, near 

 the mouth border, as in the Eutelini. 



TABLE OF GENERA. 



1. Females 2 



Males 14 



2. Front femora considerably swollen 3 



Front femora normal. 



3. Metathorax with a median carina and with the lateral folds complete, rarely abbreviated, the spiracles 



small, rounded or broadly o^al, and lying close to the postscutellar fold. 



Marginal vein in front wings thickened 4 



Marginal vein iu front wings normal, slender 7 



4. Antennae with ring-joints small, transverse or annular 5 



Antennae with the ring-joints large, not transvtise. 



Front coxse cylindrical ; knob of stigmal club obsolete Pandelus Forster 



(type Cleonymus fliiripes Forst.). 



5. Metanotum with folds and a median carina 6 



Metanotum smooth, without folds. 



Stigmal and postmarginal veins short ; abdomen conic-ovate, keeled beneath ; last joint of an- 

 tennae normal Metacolus Forster (type if. unifasciatus Forst.). 



6. Stigmal vein longer than the marginal ; last joint of the antennae stylate ; abdomen ovate, depressed, 



not keeled beneath Rhaphiteles Walker (type B. maculatus Walk.). 



