4() GENERA OF II VMKNOPTERA. 



Alxliiinen ili'in-i's.sed. more or less compressed towards apex in 9 • the seji- 

 meuts nuxlerately lonj;, the first segment shorter tliaii ])(isteriiir femora 



and trochanters combined Alra<*l<Kl<'!>» (irav. 



Abdomen sessile or subsessile, more or less depressed; arculit small, oh- 



lique or wanting; ovipositor sometimes long I'li'i'lisciis Crrav. 



•J-2. — AntennsE moderately separated from each other at their insertion; pectus 

 longer than broad; metathonix scarcely or a little longer than high; 

 third discoidal cell more or less narrowed at base, the upjier iiervure 



arched above l»ori/,<ui Grav. 



Antenna? remote from each other at their insertion ; pectus wider than long ; 

 metathorax shorter than high ; third discoidal cell rectangular, scarcely 

 narrowed at base, the upper nervure straight. 



TIior!<»iI<»('liiiM Iliilmgr. 

 23. — Abdomen long, slender, sickle-shaped, twice as long as the liead and thorax ; 

 posterior femora slender, with a short tooth beneath near iii)ex, their 

 trochanters longer than their coxa* ; stigma moderate, marginal cell lan- 

 ceolate, areolet small, oblique, jietiolate KipliOMOiiia Cress. 



Abdomen strongly compressed towards apex, when viewed laterally, clavate, 

 a little longer than the head and thorax ; posterior femora robust, with 

 a stout acute tooth, directed backwards, beneath at about the middle, 

 their trochanters shcjrter than their coxie ; stigma large and l)r()ad. mar- 

 ginal cell broad, subtriangular, areolet wanting. I'risloiiioriis (int. 



24. — Tarsi .slender 25. 



Posterior tarsi thickened, claws clo.sely pectinate ; head sjiherieal, with 

 emarginate vertex, clypeus armed at the tip ; metathorax without 

 areolae, the spiracles oval; first abdominal segment uniformly wide; 



areolet wanting - '^icolobatt'S Grav. 



25. — Tarsal claws not pectinate; abdomen subpetiolate ; s]nracles of mcialhorax 

 oval ; eyes entire: third discoidal cell much narrowed at base, the upper 

 nervure much curved upwards and generally with a stump of a vein 



before the middle KxeljiMteM (irav. 



Tarsal claws pectinate in one or both sexes; abdomen sub.sessile; spiracles 

 of metathorax linear; third discoidal cell not or but slightly narrowed 

 at base, the upper nervure straight and without the usual stump of a 

 vein. 

 Abdomen depressed in '^, acuminate and acutely pointed at tip in 9- 

 with obli(|ue impressed line on eacii side of segments 2-4 above; .scutel- 

 lum unarmed ; body smooth and polished ; posterior femora short and 

 robust; tarsal claws in % pectinate, in 9 toothed near tip; second 

 Joint of i)i)sterior trochanters swollen at tip beneath ; ey(>s entire. 



<'oral<»Moiiia» Cress. 

 Abdomen more or less compressed and thickened at apex in both sexes, 

 without oblique impressed lines; scutellum often armed with a .s]iine ; 

 posterior femora long and slender; tarsal claws ])i'clinate in both sexes; 

 second joint of jiosterinr troehanteis not swollen at ti]) l)eneatli; eyes 

 feebly emarginate Itaii<'liu!>> Fabr. 



