74 



BRITISH ICHNEUMONS. 



[Fhygadeuon. 



Areola not quadrate ; petiolar area 



nitidulous 18. VARIAP.ILIS, Grav. 



Areola quadrate ; petiolar area cen- 

 trally rugose 19. ASSIMILIS, CPrrtT/. 



Head and thorax coarsely punctate ; 



petiolar area laterally weak 20. DUMETORUM, Grav. 



Petiolar area discreted ; wings not or 



uniformly clouded. 

 Petiole long and slender ; apical 



abscissa of radius thrice longer 



than basal. 

 Hind tibiae apically black ; abdomen 



centrally flavidous 21. EXIGUUS, Grav. 



Hind tibiae not apically black ; ab- 

 domen centrally red 22. MIXTUS, Bridg. 



Petiole normal ; apical abscissa less 



than thrice longer than basal. 

 Notauli short, very distinct ; fla- 



gellum basally rufescent. 

 Head cubical ; metathoracic areae 



complete 23. AMBIGUUS, Grav. 



Head posteriorly contracted ; meta- 

 thoracic areae incomplete 24. Marsh ALU, Bridg. 



Abdomen lanceolate ; of $ distinctly 



compressed apically. 

 Post-petiole glabrous ; size smaller. 

 Flagellum not pilose ; head cubical ; 



terebra longer than first segment 25. hercynicus, Grav. 

 Flagellum pilose ; head sub-cubical ; 



terebra shorter than first segment 26. brevitarsis. Thorns. 

 Post-petiole dull and alutaceous ; size 



larger 27. NITIDUS, Grav. 



Abdomen ovate and strongly convex, 



not apically compressed 28. OVATUS, Grav. 



Notauli nearly punctiform ; flagellum 



often black. 

 Post-petiole not rimose ; eyesof $ nude. 

 Post-annellus longer than scape ; 



flagellum mainly black. 

 Front tibiae not inflated ; head hardly 



cubical 29. FUMATOR, Grav. 



Front tibiae inflated ; head cubical... 30. inflatus. Thorns. 

 Post-annellus not longer than scape ; 



flagellum basally red 31. scaposus, Thorns. 



Post-petiole rimose; eyes of$ 



densely pubescent. 

 Wings normal ; antennae red to 



their centre 32. dimidiatus, Thorns. 



Wings abbreviated ; antennae only 



basally red ■^i. rotundipennis, Thorns. 



I. bitinctus, GfiieL 



Ichneunioti bitincius, Gmel. S. N. i. 2719. Crypttis bitinctus, Gr. I. E. ii. 576; 

 Sle 111. M. vii. 290, ?. Phygoiteuon bitinctus, Tasch. Zeits. Ges. Nat. 1865, p. 32, ? ; 

 Thorns. O. E. x. 942, i 9 . 



Head black, with the palpi and mandibles sometimes pale ; clypeus 

 discreted, apically mutic and sub-truncate ; epistoma prominent ; cheeks 



