INTRODUCTORY PAPERS ON ICHNEUMONIDiE. 207 



* Front coxje more or less pale. 



t Sides of segments reddish chestnut ; aculeus rather longer than 

 1st segment ; middle of hind tibiae white. 



assimllis, nearly 3 lines, 

 ft Middle of abdomen red. (See above.) - • 59. ra2mx, var. 

 ** All the coxae black. 

 I 3rd segment and sides of rest chestnut ; middle of hind tibiae red ; 

 aculeus very short. - . - - ccedator, 2 — 2^ lines. 

 II Middle of abdomen red, 

 § Head behind the eyes not narrow. 

 Aculeus very short ; middle of hind tibiae red. 



12. auctor, 3-| — 4 lines. 

 §§ Head behind the eyes narrow ; aculeus very short. 



'^4. dolosa, 3 — 3^ lines. 

 c. Apex and before the base of hind tibiae dark. 

 '^' Middle of hind tibiae whitish. 



■\ Extreme apical margin of segments reddish yellow ; aculeus about 

 half of 1st segment. - - - ca»c/»»ff, 5 5-5 mm. 



tf Middle of abdomen red ; aculeus short. 60. rujicincta, Q^ — 3^ lines. 

 fff Sides of abdomen red ; aculeus about half of abdomen. 

 Transverse anal nervure slightly geniculated. 



26. ensator, 2^ — 3 lines. 

 ** Middle of hind tibiae reddish. - 54. notata, 2g — 3^ lines. 



B. Hind femora dark. 



a. Hind tibiae red, or apex dark. 



Aculeus short. (See below.) - - - 40. incrassata, var. 



b. Base and apex of hind tibiae dark ; aculeus short (male and female). 



* Head behind the eyes much wider at the hack part than against 



the eyes. 



Middle segments red-margined. - - monticolana, 2^ lines. 



** Head not thus widened; middle of abdomen red, more or less 



black-marked. 



f Antennae half the length of body ; hind tarsi with short 



pectinations. - - - 40. incrassata, 2^ — 3 lines. 



ft Antennae two-thirds the length of body ; hind tarsi distinctly 



pectinated. . . . . 12. auctor, 3|- — 4 lines. 



c. Apex and before the base of hind tibiae dark. 



Sides of segments red-marked, sometimes the margins also, some- 

 times almost entirely black ; aculeus longer than 1st segment 

 of abdomen. 



* Aculeus of female half of abdomen (female). 



70. tumidula, 2 — 2^ lines. 

 =:=* Aculeus of female one-third of abdomen (male and female). 



31. femoralis, 'Z^ — 2| lines. 



d. Hind tibiae almost entirely dark. 



=:- Base of hind tibiae white; aculeus very short. 4*J. ma;sta, 3 lines. 

 -"- Base of hind tibiae not white, middle sometimes reddish. 



61. rujimana, 3 — 4 lines*. 



