No.r20G. ICHNEUMON FLIES— ASHMEAD. 75 



58. Clypens anteriorly vnth a very fine, narrow, interrupted margin. 



(500) AtreMca ForsttT. 

 ("lyiKHiH anterini'ly nill/ont an iiiterrni)tinl margin. 



Transverse median nervure in front wings originating before thv ))asal nerv- 



ure; base of discoidal cell twice as wide as the apex of the hind 



middle humeral cell (561 ) Campogenes Forster. 



Transverse median nervure in front wings originating far ?>f/i/HcZ the hasal 



nervure; base of the discoidal cell thrice as wide as the apex of the 



hind middle humeral cell (562) Aselasnid Forster. 



'>'. I. Metanotum not completely areolated 60 



INIetanotum completely areolated 63 



60. Clypens medially not deepened dish-shaped, although sometimes transversely 



impressed anteriorly ^ 61 



Clypens medially flat, deepened dish-shaped. 



Transverse median nervure in hind wings broken a little above the middle; 

 in front wings not quite interstitial with the basal nervure, the 

 submedian cell slightly shorter than the median; mesojiotal furrows 

 deei^ly impressed anteriorly but convergmg and meeting at the 

 middle of the mesonotum , (563) Pcndoporllms Forster. 



61. Last joint of hind tarsi shorter than the third, or no longer 62 



Last joint of hind tarsi somewhat longer than the third. 



(564) Campoporvs Forster. 



62. Clyi)tMis I'-iil, a transverse furrow at apex; metanotum without median carina?; 



hind legs long, their tarsi thickened, the longer spur of the tibiae 

 longer than half the length of the basal tarsal joint; antennae more 



than 30-jointed ( 565 ) Si/nf actus Forster. 



Clypens normal, without a transverse furrow at apex; metanotum with two 

 median, parallel, or nearly, carinse; longer spur of hind tibise not 

 or rarely half the length of the basal tarsal joint; antennae 26- 

 jointed, more in male (566) Calliphrurus Forster. 



63. Clypeus at apex not bidentate 64 



Clypeus atapex bidentate (567) Boetlms Forster. 



64. Abdomen laterally not or very weakly compressed 65 



Abdomen laterally strongly compressed (568) Saotis Forster. 



65. Stigma not longer than the marginal cell, usually shorter and triangular, or 



nearly 66 



Rtigma much lengthened and acuminate, longer tlian tlie marginal cell. 



(569) Tromopa'd. F<")rster. 



66. Areolet entirely wanting 67 



Areolet more or less present, but always open behind. 



Metanotum areolated; clypeus much impressed on both sides at apex. 



,(570) At'dhasns Forster. 

 Metanotum 7io< areolated; clypeus n-ithout imi>ressions on anterior margin, 



not sei^arated (571 ) Hyhristes Forster. 



()7. Mandililes at apex bidentate 68 



Mandibles at apex edentate (572) Exacrodns F()rster. 



68. Lower tooth of the mandibles as long as the upper 69 



Lower tooth of the mandibles longer than the upper. 



Clypeus with a transverse impression before apex; longer spur of hind til)i;c 

 longer than half the length of the basal tarsal joint. 



(573) Tachyportlius Forster. 



Clypeus with a transverse impression before apex, the anterior margin not 



at all interrupted; longer spur of hind ti))i;e not half as long as the 



basal tarsal jt)int ('^'"■+) Hijpcrallus Forster. 



