INTRODUCTORY PAPERS ON ICHNEUMONIDZ. 103 
§ Second segment of abdomen very finely punctured. 
Segments 2nd to 4th and legs red; hind coxee, apex of hind femora 
and tibie, also apex of hind tarsal joints, black; aculeus very 
short (male and female). : : 15. varitarsus, 24 lines. 
§§ Second segment densely and coarsely punctured. 
Aculeus a little more than half of abdomen (females). 
x Segments 2nd to 4th red; sides brown; legs red; tarsi fuscous. 
16. decipiens, 24 lines. 
x x Abdomen red, apex black; legs and basal half of antennee red. 
19. melanopyyus, 1—13 line. 
x x x Segments 2nd to 4th chestnut; legs red, base black, as well as apex 
of hind femora and tibiz ; margins of segments polished. 
20. vicinus, 2 lines. 
c. Second segment punctured ; 1st either punctured or smooth. 
* Metathorax moderately short, the back part almost perpendicular. 
+ Punctures on 2nd segment very much scattered. 
t Segments 2nd and 38rd more or less red; legs red; hind coxe of 
male black, sometimes front ones also; aculeus about one-third 
of abdomen (male and female). - 28. e@stivalis, 2—24 lines. 
tt Segments 2nd to 4th red or chestnut; femora and tibie red; 
aculeus about half of abdomen (female). 27. vidibundus, 24 lines. 
++ Second segment densely punctured. 
Aculeus of female nearly as long as the abdomen. 
§ Middle of abdomen and legs red; coxee of castaneus male, black. 
x Back part of metathorax with the intermediate longitudinal 
lines. 
o Base of flagellum of female red; aculeus straight. 
Sides of post-petiole of female slanting; 8rd segment of male more or 
less red, sometimes almost or quite black (male and female). 
33. castaneus, 2—2+4 lines. 
Post-petiole quadrate (female). — - - - ? 33. castaneus, var. 
oo Antenne black; aculeus curved downwards (female). 
34. inimicus, 24—8 lines. 
x xX Back part of metathorax without the intermediate lines; supero- 
medial area almost pentagonal (female). 
35. floricolator, 2—2% lines. 
§§ Base of Ist segment, base and apex of 2nd segment, femora, tibie 
and tarsi, almost entirely red; metathorax with only the two 
transverse lines. - : 2 - - zonatus, 24 lines. 
** Metathorax elongated, without distinct ares, the back part very 
oblique. 
—+ Back part of metathorax with intermediate longitudinal lines. 
First segment of abdomen almost smooth; 2nd shining, with feeble 
puncturing; back of 2nd to 4th segments red; legs reddish 
straw; apex of hind femora and tibize black (females). 
36. fragilis, 2 lines. 
+--+ Back part of metathorax without the longitudinal lines. 
Middle of abdomen partly red; base of antenne red. 
++ Legs red (male). - - - - 37. monozonius, 2 lines. 
++++ Legs red, hinder one partly black (male). palpator, Gr., 2—8 lines. 
d. First and 2nd segments aciculate, the latter sometimes smooth at 
the apex. 
