INTRODUCTORY PAPERS ON ICHNEUMONID^. 227 



=•'=':= 1st and 2t)d segments densely and evenly punctured. 



66. erythrinus, :2f lines. 

 F. Metathoracic areae complete and distinct (males). 



a. Supero-medial area transverse. 



* Supero-medial area hexagonal, not rounded in front or behind, 

 t Tibiae white-ringed. - - - 38. parviventris, 4 lines. 



ff Tibiae not wliite-ringed ; abdomen red, petiole black. 

 I Middle and hind tibiie spined outside. 35. vai/ahuiulus, 4 lines. 

 II Tibiae not spined outside. 



§ Legs stout, femora black. - - - 49. obscuripes, 4 lines. 



§§ Legs slender, femora red. - - - 47. abdomiiiator, 4 lines. 

 ** Supero-medial area transverse, rounded at least in front. 

 X 1st and '2nd segments aciculate. 



Greater part of abdomen and Iv^a red. - 2. rut/ulosus, 2i lines. 

 X X 2nd segment polished, not aciculate. 



Part of face and front coxae white. - 15. bifrons, 2| — 2f lines. 

 00 Face and front coxae black. - - - 17. vat/ans, 2 lines. 



XXX 1st and 2nd segments polished. 34. subtiliconiis, 2 — 2J lines. 



b. Supero-medial area as broad as long, but never quadrate. 



=:= Supero-medial area would be hexagonal, but for the bottom Inie 



projecting inwards in the form of an angle or bow. 

 t Mouth and inner orbits white. - 11, jejimator, 2|- — 3J lines, 

 ft Face black. 



1 The 3rd abdominal segment, only, red ; legs dark. 



10. troglodytes, 2 lines. 

 II 2ud to 3rd or 2nd to 4th abdominal segments red ; legs vary. 

 § 2nd segment very indistinctly aciculate. 6. variabilis, 2i — 3 lines. 

 §§ 2nd segment not aciculate. - - 8. fiiiuator, If — 3 lines. 

 ** Supero-medial area hexagonal, with more or less blunt angles. 

 X Inner orbits white. - - - 56. hasizonus, '2 — Splines. 



X X Inner orbits black. 



All the coxae of the same colour. 

 -> Coxae and legs red, or greater part red. 

 ^-* Coxae not darker than the legs ; base of antennae generally red. 



5. dumetorum, 2^ — 2| lines. 

 ■^--^-^ Coxae darker than the legs. - - 8. fumator, IJ — 3 lines. 

 -i--i- Coxae black. 



«3^ All the femora red or black. - - - - 8. fumator var. 

 M^-"^ All the femora more or less browned; the hind ones, especially, 

 very slender ; 2nd to 6th segments red. 9. tenuipes, 3 lines. 

 00 Hind coxae darker than the front ones. 



Front and middle coxae more or less red and white ; hind ones 

 black, or partly so. - - - - - 8. fumator var. 

 ♦ ■i=-:= Supero-medial area pentagonal ; 1 st segment aciculate. 



Middle of abdomen and legs partly red. 23. amhiguus, 3 — 3^^ lines. 



c. Supero-medial area distinctly longer than broad, in shape pent- 



agonal or hexagonal. 

 f Inner orbits white. 



=i= Metathorax with lateral spines; Jst segment with prominent 



spiracles. .... 64. sperator, '2\ — 3^1ines. 

 =:==;= Metathorax without lateral spines ; spiracles of 1st segment 



scarcely perceptible. - - 63. lacteator, 2^ — 4 lines, 

 ft Inner orbits not white. 



