238 MEMOIRS OF THE CARNEGIE MUSEUM 



5. Scutellum not flat, usually convex or at least subconvex, and usually, but not always, without longitudinal 



grooved lines 6 



Scutellum flat and broad, quadrate, vpith two longitudinal grooved lines. 



Metallic ; flagellum filiform, the joints of the funicle at least twice as long as thick ; ocelli ob- 

 tusely triangularly arranged Idarnes Walker (type /. carme Walker). 



Non-metallic ; flagellum subclavate, the joints of the flagellum not or scarcely longer than 



thick ; ocelli arranged nearly in a straight line Koebelea Ashmead, g. nov. 



(type K. australiensis Ashm.). 



6. Ovipositor shorter than the body and sometimes not at all prominent 11 



Ovipositor longer than the body ; funicle of antennae 5-jointed 7 



7. Abdomen with the ventral segments normal, not widened downwards 8 



Abdomen with the ventral segments widened downwards. 



Hypopygium very prominent, plowshare shaped ; antennae 12-jointed, with 2 ring-joints. 



Goniogaster Mayr (type G. variicornis Mayr). 



8. Mesothoracic furrows distinct, complete 9 



Mesothoracic furrows not distinct, wanting posteriorly. 



Antennae 11-jointed, with one ring-joint inserted much nearer to the front margin of the head 

 than to the middle ; stigmal vein long, nearly three fourths the length of the marginal. 



Sycoryctes Mayr (type S. patellaris Mayr). 



9. Antennae 12-jointed or less - 10 



Antennae 13-jointed, with three ring-joints inserted at an equal distance between the middle and the 



front margin of the head ; stigmal vein less than one third the length of the marginal. 



Trichaulus Mayr (type T. versicolor Mayr). 



10. Antennae 12-jointed with one ring-joint ; stigmal vein about half the length of the marginal. 



Apocryptophagus Ashmead, g. nov. (type Chalcis ? explorator Coquerel). 



Antennae 9-joinled (teste Motschulsky) ; abdomen elliptic, much depressed, the ovipositor twice the 



length of the body Platyneura Motschulsky (type P. testacea Motsch.). 



11 . Postmargiual vein distinct, always present '■ 12 



Postmarginal vein wanting or never well developed , 14 



12. Ovipositor hidden 15 



Ovipositor always prominent or exserted 13 



13. Antennae 12-jointed with two ring-joints, the funicle 5-jointed, inserted near the clypeus, the joints of 



the flagellum fluted ; body metallic ; ovipositor about as long as the thorax and abdomen united 

 or a little longer, and thickened towards apex. Colyostichus Mayr (type 9 C. longicaudis 



Mayr, c? Heteradrium longipes Mayr). 

 Antennae 11-jointed with one ring-joint, the funicle 5-jointed, the club 3-jointed, the joints of the 

 funicle hardly longer than thick ; ovipositor scarcely as long as the abdomen, gradually thick- 

 ened towards apex. Heterandrium Mayr (type c^ H. biannulatum Mayr, $ Colyostichus brevicaudis 



Mayr). 



14. Scutellum with two longitudinal grooved lines, the axillae widely separated ; ovipositor a little shorter 



than the abdomen Sycophila Walker (tj'pe S. decatomoides Walk.). 



Scutellum without grooved lines, the axillae nearly uniting at base of scutellum ; ovipositor only 

 slightly projecting Froggattia Ashmead, g. nov. (type F. polita Ashm.). 



15. Mesothoracic furrows indistinct, never complete ; antennae 9-jointed. 



Micranisa Walker (type Idarnes pteromaloides Walk.). 



