350 MK>rOIRS OF THE CARXKGTE MUSEUM 



17. Abdomen short oval, or rotuud, shorter than the thorax 19 



Abdomen elongate, conic-ovate or conical, fully as long as, or longer than, the thorax. 



Metanotum not punctate, the abdomen neither cylindrical nor sculptured, the segments not 

 subequal, the head and thorax smooth, not strongly sculptured or closely punctate IS 



Metanotum very short and punctate, the abdomen cylindrical, sculptured, the segments short, 

 subequal, the head and thorax closely punctate or strongly sculptured... Triclioporus Fiirster. 



18. Metanotum very short, smooth, and often without a median carina ; if the median carina is present it 



is united with a transverse apical carina ; abdomen not longer than the thorax. 



Tetrastichodes Ashmead. 



Metanotum short, with a ^-shaped median carina ; abdomen very long, conieally produced, much 



longer than the thorax Hyperteles Forster. 



19. Species small and short, black or at most jcneous black, the abdomen rotund, never ovate or conieally 



pointed Syntomosphyrum Furster. 



20. Antennae 8-jointed, without a ring-joint. 



Abdomen ovate or conieally pointed. 



Abdomen short rotund Syntomosphyrum Forster (partim). 



Abdomen not short, ovate, or conic ovate Tetrastichodes Ashmead (partim). 



21. Scape of antennae normal, neither greatly thickened nor dilated 22 



Scape of antennse enormously enlarged or dilated. 



Front wings with a long marginal fringe ; flagellum liliform, slender, with a short pubescence. 



Ceranisus Walker. 

 Front wings with a short marginal fringe Baryscapus Forster. 



22. Antennre 9-jointed, with one ring-joint 23 



Antennse 8-jointed, with one ring-joint 25 



23. Front legs swollen, their tibise short 24 



Front legs normal, their tibise not short. 



Flagellum long, with long sparse hairs. Tetrasticlius Haliday. 



Flagellum not especially long, without long spar.se hairs ; metanotum smooth, without a median 

 carina . Aprostocerus Westwood. 



24. Pronotum transverse quadrate, not short; abdomen oval, shorter than the thorax... Crataepus Forster. 

 2.">. Flagellum clavate, hairy, the funicle 2-jointed, the joints transverse ; pronotum very short ; abdomen 



ovate, not longer than the thorax Pentastichus Ashmead. 



Snil AMILY IV. Elachektix.1-.. 

 1856. ElachistoicUe, Family 18 (partim), FOrster, Hym. Stud., 11., pp. 19, 26 and 72. 

 1875. Elachistina, Tribus (partim), Thomson, Hym. Skand., \'., p. 180. 

 1886. Elachistinte, Suljfamily (partim), Howard, I-^nt. Amer., I., p. 198; II., p. 99. 

 1897. Eulophinte, Subfamily IV. (partim), Ashmead, Proc. Ent. Soc. Wash., IV., p. 

 249. 

 This subfamily is based upon the genus Klaclicrtiis Spinola, established in 1811. 

 Walker changed it to Elachcdus which held sway until 1856, when Foi-ster changed 

 it to Elaclusta.% making it the type of his family Elachutoidx. I restore the original 

 spelling of th" genus and call the subfamily K/(irJiertiii;r. The continual change in 



