PARASITICA — ICHNEUMONID^. 43 



First abdominal segment 9 with very short petiok^ almost sessile ; meta- 

 thorax with small, circular si)iracles ; areolet very small. 



*C!yrl<»cry|»tiis Marsh. 

 8. — Metathorax rough, with two transverse carinse, and elonj^ate or linear spira- 

 cles JHesosteuus Grav. 



Metathorax polished, with only the anterior transverse carina aud small 



round or oval spiracles ...*Neiiial<>|K><liii« (irav. 



!). — First abdominal segment linear, longitudinally furrowed, ilssiiiracli^s jilaced 



before the middle •■Orthoi»*'liiia Tasch. 



First abdominal segment expanded posteriorly, its spiracles ])lac(^d behind 

 the middle. 

 Metathorax with two transverse carinse: abdomen not broader than the 



thorax ■■Iscliiiocerus Grav. 



Metathorax, at most, with the po.sterior carina; abdomen l)roader than 



the thorax 'Catalytus Forst. 



10.— Ovipositor much abbreviated, either scarcely exserted, or so short that it 



does not attain half the length of the first abdominal .segment 11. 



Ovipositor elongate, usually longer than half of first abdominal segment. .1:2. 

 11. — First abdominal segment much expanded behind the spiracles. 



Ptero<M»riinis Forst. 



First abdominal segment very slender to the tip ■C'reiiiiioiles Forst. 



12. — Metathorax completely and regularly areolated •Stibeutes Forst. 



Metathorax not, or imperfectly, areolated. 

 Scutellum distinctly separated. 



Posterior tarsi with the penultimate joint deeply notched or bilobed. 



■ Agrotliereiiles Forst. 

 Posterior tarsi with the ])enultimate joint not biloljed. 



The rudimentary wings extending beyond the base of the metatho- 

 rax ; first abdominal segment jiunctured, not longitudinally 



wrinkled A|>te!>ii!>> Forst. 



The rudimentai-y wings not extending to base of metathorax ; first 

 abdominal segment more or less longitudinally wrinkled. 



■:XlioroN(*4»i>ii<>» Fiirst. 

 Scutellum not distinctly separated. 



Face much abbreviated ■ l*osKOI<>cliiif* Forst. 



Face of the u.sual length ■Vzoiiiachiis Grav. 



Subfamily Ofiiionin.f.. 

 Table of Genera. 



("ubito-discoidal cell receiving both recurrent nervures 2. 



Cubito-discoidal cell receiving but one recurrent nervure 3. 



2.— Intermediate tibise with two apical spurs; metathorax .smooth or i)uuctured. 



Wings hyaline, stigma distinct, well developed ; dypeus truncate at apex ; 



ocelli large, prominent ; thorax and legs glabrous; metathorax rounded 



behind, not rugo.se Opiiioii Fabr. 



Wings fuscous, stigma obsolete ; dypeus obtusely pointed at apex ; ocelli 

 small ; thorax and legs with short, rather dense pubescence: nu>tathoi-ax 

 truncate behind, coarsely rugose Tliyroodou IJrulle. 



