ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 253 



24. Antennae 12- or 13-jointed ; thorax black ; hind femora armed with many minute teeth. .Smicra Spinola. 

 Antennae 14-jointed ; thorax yellow or yellow marked with black ; hind femora armed with 6 teeth. 



Epitranus Walker. 



25. Hind femora armed with one large tooth near base followed by many small or minute teeth, from 10 



to 20 or more 26 



Hind femora armed with from 3 to 9 large teeth 30 



26. Metathorax armed with from 2 to 4 teeth or projections 29 



Metathorax unarmed. 



Scutellum at apex unarmed, without an emarginate or bidentate plate 27 



Scutellum at apex armed with an emarginate or bidentate plate. 



27. Abdominal petiole very long and slender, as long as the thorax or nearly 28 



Abdominal petiole usually short and stout, or at least never very long nor very slender. 



Pronotum anteriorly rounded or sloping, not acute ; petiole carinate. Eustypiura Ashmead. 

 Pronotum anteriorly acute ; petiole not carinate Spiloclialcis Thomson. 



28. Scape of antennae abnormal, long and clavate, extending far above the ocelli. Ceratosmicra Ashmead. 

 Scape of antennae slender, cylindrical, not or only slight extending above the ocelli. Sayiella Ashmead. 



29. Metathorax bi-dentate ; a tooth on each side of the petiole. 



Scape of antennae normal ; abdominal petiole not very long nor slender. 



Spilochalcis Thorns, (partim). 



Scape of antennae usually long and slender, extending much beyond the ocelli ; abdominal 



petiole very long and slender, as long or nearly as long as the thorax. 



Mischosmicra Ashmead. 

 Metathorax quadridentate ; two teeth on each side of the petiole. 



Scutellum at apex, bidentate or with an emarginate plate Xanthomelanus Ashmead. 



Scutellum at apex normal, unarmed. 



Thorax wholly black ; scape of antennae normal, petiole of abdomen normal. 



Melanosmicra Ashmead. 

 Thorax yellow or yellow marked with black ; scape of antennae abnormal ; petiole of ab- 

 domen very long. 



Scape long and clavate, excavate at apex beneath, extending far above the ocelli. 



Ceratosmicra Ashmead. 

 Scape slender, cylindrical and extending only slightly beyond the ocelli. 



Sayiella Ashmead. 



30. Antennae 13- or 14-jointed 31 



Antennae 12-jointed ; metathorax quadrideuUt Thaumapus Kirby. 



31. Antennae 13-jointed 32 



Antennae 14-jointed. 



Hind femora armed with large or moderate-sized teeth Epinaeus Kirby. 



32. Hind femora armed with 8 large teeth or less 33 



Hind femora armed with 9 moderately large teeth Enneasmicra Ashmead. 



33. Hind femora armed with 7 large teeth or less 34 



Hind femora armed with 8 large teeth. 



Mesonotum without distinct parapsidal furrow Protoceras Kirby. 



Mesonotum with distinct parapsidal furrows Octosmicra Ashmead. 



34. Hind femora with 6 large teeth or less 35 



Hind femora with 7 large teeth Heptasmicra Ashmead. 



