No.i20fi. ICHNEUMON FLIES— ASHMEAD. 61 



Metathorax exareolated, with one transverse carina — the basal; spiracles 

 small, rounded; submedian cell longer than the median, the areolet 

 rather small pentagonal; first abdominal segment short, usually 

 shorter tlxan the second 1 (395) HoIcohUzus Fiirster. 



Metathorax with a median area which is, however, confluent with the peti- 

 olar area; submedian cell shorter than the median; first abdominal 

 segment not short, distinctly petiolate. 



(396) Ouboceplialuti Ratzeburg. 



5. Metathorax areolated. 



Scutellum rather flat; anterior tibia? deformed, femora incrassated; areolet 

 pentagonal (397) DyseidajyuH Kriechbaumer. 



>Scutellum gibbous; anterior tibiee subinflated, constricted at base; areolet 

 oblique; subrhomboidal (398) Mirrotritiia Kriechbaumer. 



6. Not all the femora short and much swollen, the hind femora always unarmed. 7 

 All the femora short and much swollen, the hind femora sometimes armed with 



a tooth beneath. 

 Metathorax areolated; Ivoni w'm^s without an areolet; abdomen petiolate, 

 the ovipositor longer than the abdomen. 

 Hind femora armed with a strong tooth beneath; upper hind angles of 



metathorax toothed or spined (399) Odontomcrus Gravenhorst. 



Hind femora unarmed but much swollen; hind angles of metathorax 



normal, not toothed (400) Anodontomcnts Ashmead, new genus. 



(Type, Aplomerus tibialis Provancher.) 



7. Frons simple, not horned 8 



Frons with a prominent horn or excrescence. 



Mesonotum with distinct furrows; metanotum areolated; aljdomen petiolate, 

 the ovipositor as long as the abdomen. 



(401) Ischnoceroa Gravenhorst. 

 <s. Front wings without an areolet, the areolet entirely absent. 



Abdomen distinctly sessile 12 



Abdomen distinctly petiolate. 



Second recurrent nurvure not angularly broken by a stump of a vein. 



(402) Clepticus Haliday. 

 (Type, Clepticus prsetor Haliday.) 

 Second recurrent nervure angularly broken by a stump of a vein; stigma 

 scarcely developed; transverse median nervure in hind wings angu- 

 larly broken near the middle; legs long (403) Epixorides Smith. 



(Type, Epixorides chalyheator Smith.) 

 Front wings with an areolet, rarely open behind. 



Mandibles of an equal length; body stouter and not so elongate 9 



Mandibles of an unequal length; body slender and elongate. 



Head not much swollen, subquadrate; metathorax exareolated; abdo- 

 men slender; the ovipositor at the most as long as the abdomen; legs 



very slender, the hind pair lengthened (404) . Callidisis Forster. 



9. Clypeus medially lamellate or toothed; metathorax exareolated, or at most with 

 longitudinal carina^, rarely indistinctly areolated. 



Areolet completely closed 10 



Areolet open Ijehind. 



Clypeus anteriorly medially lamellate or toothed; metathorax indis- 

 tinctly areolated (405) Perosis Forster. 



1 0. Temples posteriorly simple, not tuberculate 11 



Temples posteriorly tuberculate (406) Achorocephalus Kriechbaumer. 



11. Transverse median nervure in hind wings broken below the middle; front tibiai 



moderately thickened but not inflated; middle mesothoracic lobe 



