SYNOPSIS OP GENERA. 35 



visible ; the third segment covering the greater part of the 

 abdomen ; radial cellule closed ; claws bifid. Ceroptres. 



8 (7) Face without keels. 



9 (10) Hypopygium ploughshare-shaped, ending in a sharp point 



and without a distinct ventral spine; mesopleura? with a 

 distinct longitudinal furrow, sometimes punctured ; radial 

 cellule completely closed ; claws simple. Bhodites. 



10 (9) Hypopygium not ending in a sharp point ; incised beneath, 



and having a ventral spine. 



11 (12) Scutellum not separated from the mesonotum by a suture ; 



no ridge-like border behind the depression at the base ; 

 parapsidal furrows absent, or, if present, only reaching to 

 the middle ; antenna and tibia? not hairy ; antennae 13 — 15- 

 jointed. Neuroterus. 



12 (11) A suture between the mesonotum and scutellum ; a ridge-like 



border behind the fovea?. 



13 (14) Abdomen, especially from the third segment to the apex, 



closely covered with silky hair ; antenna?, head, and legs 

 completely pilose; head not swollen behind; parapsidal 

 furrows complete; scutellum broader than long, with two 

 fovea? at the base. Cynips. 



14 (13) Abdomen not silky haired. 



15 (16) Cheeks with a sharp furrow ; antenna? 14-jointed ; the fia- 



gellum thin, attenuated towards the apes ; parapsidal fur- 

 rows sharp and complete ; mesonotum polished ; fovea? at 

 base of scutellum separated by a sharp keel ; metanotum 

 with two curved carina? ; second joint of tarsi as long as the 

 terminal, claws bifid ; abdomen red. Trigonaspis. 



16 (15) Cheeks without a furrow ; the apes of flagellum not thinner 



than the middle. 



17 (18) Front, vertes, mesonotum, and mesopleura? shining, smooth, 



glabrous ; antenna? 13 — 14-jointed ; scutellum with two 

 sharply separated fovese at base ; pronotum with two small 

 fovea? near the middle; metanotum with two parallel carina?; 

 claws simple. Xestophanes. 



18 (17) Head and mesothorax not shining and polished. 



19 (20) Second and third abdominal segments without a suture, so 



that there are only sis segments apparent ; cheeks without 

 furrows ; face laterally striated ; head not swollen behind 

 the eyes ; metanotum with two parallel keels ; pronotum not 

 narrowed in the middle, and with two not very distinct 

 keels; mesonotum finely punctured and pilose; antenna? 

 12-jointed, the third joint shorter than the fourth or equal 

 to it ; claws bifid. Periclistus. 



20 (19) Second and third abdominal segments not united. 



21 (24) Cheeks more than half as long as the eyes, without a furrow ; 



last joint of the flagellum not thicker than the fifth or 

 sisth ; pronotum scarcely narrowed in the middle ; parap- 

 sidal furrows complete; two sharply separated fovea? at 

 base of scutellum ; ventral spine at the most scarcely longer 

 than broad; antenna? 13— 14-jointed; radial cellule short, 

 broad. 



22 (23) Claws bifid ; mesonotum polished. Diastrophus 



23 (22) Claws simple ; mesonotum closely shagreened or punctured, 



opaque. Aulax. 



