186 



BRITISH ICHNEUMONS. 



[Ussono/a. 



Third segment transverse ; terebra 



shorter 



Third segment elongate ; terebra 

 longer 



Vertical orbits white-marked ; terebra 

 as long as body. 



Eyes internally divergent ; second seg- 

 ment subnitidulous and finely punc- 

 tate. 



(5' length 7 mm. ; hind co.xae mainly 

 black . . 



(^ length 9 mm ; hind coxae sparsely 

 black ( 9 unknown) . . 



Eyes intei^nally parallel ; second seg- 

 ment dull and distinctly punctate 



Abdomen black, at most with the in- 

 cisures narrowly pale. 



Tarsal claws double length ofpulvilli; 

 length 8 mm. or more. 



Central segments badious, nitidulous 

 and not punctate . . 



Central segments black, duller and 

 closely reticulate. 



Hind tibiae red ; central segments 

 sparsely punctate . . 



Hind tibiae black ; central segments 

 not at all punctate . . 



Tarsal claws hardly longer than pul- 

 villi ; size usually smaller. 



Second and usually third abdominal 

 segment elongate. 



Mesonotum red-marked. 



Mesonotal vittae alone pale ; J inci- 

 sures white . . 



Mesonotum entirely red ; J' incisures 

 not white 



Mesonotum not at all red. 



Vertical dots and often scutellum pale. 



Terebra as long as body ; (J scape 

 pale beneath 



Terebra as long as abdomen ; J" scape 

 immaculate . . 



Vertical dots and scutellum immacu- 

 late. 



Body strongly nitidulous ; length 

 12 mm. 



Body not strongly nitidulous ; length 

 10 mm. or less. 



Stigma testaceous ; 9 antennae 

 shorter than body . . 



Stigma black ; antennae as long as 

 body ( (J unknown) . . 



Second segment quadrate or trans- 

 verse. 



Vertex not emarginate ; length at 

 least 62 mm. 



Scutellum laterally, and often meso- 

 notal vittae, flavous 



Scutellum, and mesonotum discally, 

 immaculate. 



NITIDA, Bridg. 

 SUB.\CICULATA, Bridg. 



14. 



BELLATOR, Grav. 

 ARGIOLA, Grav. 

 VARiiPES, Desv. 



15. CYLINDRATOR, Vill. 



16. SULPHURIFERA, Gr. 



17. FEMORATA, Hobngr. 



18. CULICIFORMIS, Gr. 



19. Halidayi, Holmgr. 



20. VARIABILIS, Hlmg. 



21. RUFOMEDIA, Bridg. 



22. FRONTALIS, DcSV. 



23. UNiciNCTA, Holmgr. 



24. TROCHANTERALIS, D.T. 



25. DEVERSOR, Grav. 



