INTRODUCTORY PAPERS ON ICHNEUMONID^. 105 



If Hind femora more or less piceous. 



X Hind tibiae reddish or reddish straw, base and apex brownish ; 



aculeus scarcely half of abdomen. 68. transfuga, 1 — 1^ line. 



X X Hind tibiae dark brown, with lighter rings ; aculeus two-thirds of 



abdomen (female). - - - 33. flaviventris, 2|- lines. 



** Scape reddish beneath. 



-H- Hind femora red ; aculeus scarcely half of abdomen. 

 ••"' Front coxae red (female). - - - 8. apostata, If line. 

 "►■•"► Front coxae black (female). • - 28. exareolata, 2 — 2^ lines. 

 -t--i- Hind femora black. 



Apex of hind tibiae reddish ; aculeus short (female). 



croceipes, 2 J lines. 

 B. Abdomen red and black. 



* Scape black beneath, 

 f Hind femora red. 



Middle of abdomen, femora and tibiae red ; apex of latter dark ; 

 aculeus very short. - - - 4. alienata, 3 — 3| lines, 

 ff Hind femora dark. 



Sides of abdomen red ; hind legs almost entirely black ; aculeus 



very short (female). - - - - 1. aberrans, 3 lines. 



** Scape pale beneath (males and females). 



I Legs red ; 2nd and 3rd segments of abdomen red ; aculeus longer 



than the 1st segment. - - - 25. dorsalis, 2J lines. 



II Hind legs black ; 3rd to 7th segments of abdomen red ; aculeus 



short. 14. braccata, 2f lines. 



Section II. — Fore wings with an areolet. 

 Division 1. — Back of metathorax more or less concave. 



A. 2nd segment of abdomen hardly longer than wide. 



Black ; legs red, coxae and base of trochanters black ; hind tibiae 

 and tarsi white or whitish ; apex and before the base of the 

 former dark, and articulations of the latter dark : aculeus half 

 of abdomen (male and female). 



* Sides of post-petiole subrotund. - - 2. albida, 2h — 3 lines. 

 ** Sides of post-petiole somewhat parallel; hind femora generally 



dark at the apex. - - 36. geniculata, 1^ — 2^ lines. 



B. 2nd segment of abdomen distinctly longer than wide. 

 Black ; legs partly red or pale. 



* Scape of antennae black beneath. 



f Flagellum of female marked with white in the middle ; legs red ; 

 base and apex of hind tibiae and tarsi brown ; aculeus very 

 short (female). - - - - albovincta, about 2 lines, 

 ff Flagellum of female not white-marked ; coxae and hind trochanters 

 black; hind tarsi infuscated; aculeus rather more than half of 

 abdomen (male and female). - 61. mutabilis, 2 — 2 J lines. 

 ** Scape of antennae pale beneath. 



Legs red, base black, tarsi fuscous ; aculeus rather more than half 

 of abdomen (female). - • - 30. Faiwus, 2^ hues. 



ENTOM. — APRIL, 1885. 



