INTRODUCTORY PAPERS ON ICHNEUMONID. 211 
** Seutellum without the marks in front. 
{ Hind tibiz with a white ring. 106. albicinctus, 3—4 lines (h). 
{{ Hind tibize without a white ring; femora generally black; tibic 
pale; apex black. 
§ Scutellum and marks on thorax yellow. 
x Yellow mark before and beneath the wings; hind coxe beneath nude. 
1. pisorius, 11—12% lines (J, a). 
x xX Yellow marks beneath the wings only. 
123. exspectatorius, 104 lines, 
§§ Scutellum and other marks white or whitish; hind coxe pubescent. 
x X X Pale line before the wing; supero-medial area of metathorax deeply 
; emarginate at the apex. - 3. similatorius, 9—10 lines (1). 
x x x X No pale line before the wings; supero-medial area of metathorax 
truncate at the apex. - 4. Coqueberti, 9—10 lines. 
b. Scutellum more or less red. 
o Red line before the wings ;. ovipositor § the length of the abdomen; 
tibize partly red. - - 81. lanius, 4—5 lines (s). 
oo No red line before the wings. 
+ Ovipositor slightly projecting; femora red or black, tibie red. 
100. castaneus, 44—53 lines (s, l, a). 
+--+ Ovipositor 4 the length of the abdomen ; front tibize reddish, scutel- 
lum sometimes black. . - 82. albilarvatus, 44 lines. 
B. 2nd and 8rd abdominal segments only, more or less red (females). 
Lateral margins of scutellum white, femora and tibie red. 
26. scutellator, 5—6 lines. 
C. 1st to 4th abdominal segments red, base of Ist sometimes more or 
less black (females). 
a. Scutellum white; gastroceeli indistinct. 
* Scutellum entirely white; post-petiole entirely punctated; tibie red. 
105. semirufus, 32—4 lines. 
*& Apex of scutellum only, white; post-petiole strongly punctated, 
apex smooth; legs red and black varied. 
83. vacillatorius, 24—8 lines (s, l). 
b. Scutellum whitish yellow, base red; post-petiole rather smooth; 
front or all femora red ; tibie red. 101. defraudator, 4 lines. 
D. Apical margins of 2nd—4th segments, 6th—7th entirely red; or 
greater part of abdomen red; basal keels of scutellum white 
(females). 
+ Areolet towards the costa narrow. - 16. ruficaudus, 7 lines. 
++ Areolet towards the costa wide. 10. lineator, 6—8 lines (¢, s, l. a). 
A. Hinder tibie black with a white ring (males). 
106. albicinctus, 83—4 lines. 
B. Hinder tibie without a white ring (males). 
a. Abdomen red, Ist segment entirely black, or apex red. 
* Basal keels before the scutellum not pale marked. 
+ Seutellum and marks on thorax yellow. 1. pisorius, 11 —122 lines. 
++ Scutellum and marks on the thorax white or whitish. 
(Supero-medial arez as in the females). 
{ White line before and beneath the wings. 
3. similatorius, 9—10 lines (J). 
tt White line beneath the wings ouly. 4. Coqueberti, 9—10 lines. 
** Basal keels before the scutellum marked with white. 
10. lineator, 6—8 lines (¢, s, 1, a). 
