INTRODUCTORY PAPERS ON ICHNEUMONID,^. 81 



E. Legs red; coxaa and femora of hinder one black (female). 

 Antennae red, white-ringed ; abdomen red, 1st segment black. 



14. (4.) troglocbjtes, 2-J- — 3 lines (s, I). 



F. Legs entirely red ; antennae and abdomen as in E (female). 



14. (4.) troglodytes, 2^—3 lines (s, I). 



G. Femora and tibiae red ; hind femora sometimes more or less fuscous, 



and sometimes the front ones also ; hind tibiae, base black, apex 

 fuscous ; coxae black, front ones often red at the apex (female). 

 Segments, 2nd to 3rd, red- or black-marked, or apical margins only 

 distinctly or obsoletely red ; antennae red, subannulated. 



(4.) suspicax, 2 lines {I, a). 

 H, Femora and tibiae of front legs red, or partly so ; remainder entirely, 

 or nearly all, black (females). 



a. Hind coxae unarmed ; middle of abdomen chestnut or reddish. 



■'■ Antennae white-ringed. - - - 12. cephalotes, 2J — 4|- lines. 

 ** Antennae red-ringed. - - - - 13. acutus, 2^ — 3f lines. 



b. Hind coxae with a small crest ; antennae dark brown ; abdominal seg- 



ments, 2nd to 3rd, red, with a dark spot in the centre of each. 



(8.) minus, 2 lines. 



c. Hind coxae with a minute tooth ; antennae dark brown ; abdominal 



segments, 2nd to 3rd and base of 4th, red. (3.) trepidus, 2^ lines. 

 AA. Coxae black (males). 



Abdominal segments, 2nd to 4th or 5th, red, sometimes with black 

 marks (f) ; legs dark, front ones partly pale, as well as middle of 

 hind tibiae, and base of femora more or less so. 



a. Post-petiole smooth, or faintly aciculate. 



* Cheeks dilated below the mandibles ; forehead reticulate, with coarse 



punctures. - - - - 1. semivulpinus, 3i- — 4 lines. 

 r-^>- Cheeks not dilated below the mandibles ; forehead shining, with rather 



fine punctures, 

 f Face very protuberant. - - - - 3. melanogonus, 3 lines, 

 tf Face not very protuberant. - - - 2. planifrons, 3 — 4 lines. 



b. Post-petiole very rugose, and with two keels ; segments, 2nd to 4th, 



castaneous ; disk cloudy or black, partly red. 



12. cephalotes, 3^—4^^ lines. 



c. Post-petiole entirely punctated. 



* Hind tibiae, towards the middle, piceous or black. 



8. ophthalmicus, 3 lines. 

 ** Hind tibiae pale red, also apex of hind femora. 9. tnitigosus, 2^ lines. 

 BB. Coxae not all black (males). 



a. All the coxae red ; legs red ; apex of hind femora, base and apex of 



hind tibiae, red. 



* Segments, 1st to 4th, red. - - - 16. jucundus, 3| lines. 

 *■:= Segments, 2nd to 5th, red. - - - 7. fulvitarsis, S^ lines. 



b. Hind coxae black ; front ones pale. 



t Middle segments of abdomen red-margined. 



I Face, or at least the clypeus, yellow. - - suspicax, 2 lines. 



II Face black. 17. imhellis, 2 — 2^ lines. 



if Segments, 2nd to 4th, sometimes with dark marks; 2nd generally so; 



hind co.xae black, apex pale straw. 10. ischiomeUnus, 2^—3 lines. 



Iff Segments, 2nd to 4th and margins of 1st and 5th, greater part of legs, 



and scape of antennae, red. - - II. conciliator, )il Vines. 



M 



