350 MEMOIRS OF THE CARlSrp:;GIE MUSEUM 



17. Abdomen short oval, or rotund, 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 18 



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

 subequal, the head and thorax closely punctate or strongly sculptured...Trichoporus Forster. 



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



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



Tetrastichodes Ashmead. 



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



longer than the thorax Hyperteles Forster. 



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



pointed.- Syntomosphyrum Forster. 



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



Abdomen ovate or conically 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 antennae enormously enlarged or dilated. 



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



Ceranisus Walker. 

 Front wings with a short marginal fringe Baryscapus Forster. 



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



Antennae 8-jointed, with one ring-joint 25 



23. Front legs swollen, their tibiae short 24 



Front legs normal, their tibiae not short. 



Flagellum long, with long sparse hairs Tetrastichus Haliday. 



Flagellum not especially long, without lopg sparse hairs ; metanotum smooth, without a median 

 carina ... Aprostocerus Westwood. 



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



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



ovate, not longer than the thorax Pentastichus Ashmead. 



Subfamily IV. Elachertin^. 

 1856. Elachistoidse, Family 18 (partim), Forster, Hym. Stud., IT., pp. 19, 26 and 72. 

 1875. Elachistiiia, Tribus (partim), Thomson, Hym. Skand., V., p. 180. 

 1886. Elachistinas, Subfamily (partim), Howard, Ent. Amer., I., p. 198; II., p. 99. 

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

 249. 

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

 Walker changed it to Elachestus which held sway until 1856, when Forster changed 

 it to Elachistas, making it the type of his family Elachistoidfe. 1 restore the original 

 spelling of the genus and call the subfamily Elachertinx. The continual change in 



