NO. 2334. NORTH AMERICAN ICHNEUMON-FLIES— CUSHMAN. 267 



black, the latter reddish beneath; front coxae largely reddish, paler 

 at apex and black at extreme base; front and middle trochanters 

 and apical joint of hind pair white; basal joint of hind trochanter 

 black; hind tibia reddish fuscous, paler above, whitish at extreme 

 base and with black apical and subbasal annuli, this pattern repeated 

 without the black in middle and front tibiae, which are pale yellow 

 above in the middle; hind tarsi fuscous, the joints paler at base but 

 without definite white annuli; other tarsi of similar pattern but 

 paler; femora testaceous, hind femur not black at apex; second 

 tergite distinctly and third faintly reddish laterally. 



Of the eight females in the type series four are larger and three 

 smaller than the type, the largest being 9.5 mm. and the smallest 

 5.5 mm. long. 



The smallest (paratype g) is more slender than the type; the head 

 and thorax are very similar to those of the type, but the median 

 areas of the propodeum are much narrower, the areola being prac- 

 tically acute at base; the venation differs only minutely; the first 

 tergite has the postpetiole strongly swollen above, distinctly longer 

 than wide and without the dorsal impressions; the petiole is scarcely 

 flattened above, as wide as thick, and the lateral foveae are shallow, 

 while the dorso-lateral carinae are obliterated; the second tergite is 

 fully twice as long as wide at base with the gastrocoeli farther removed 

 from the base. 



The largest specimen (paratype «) is somewhat stouter than the 

 type, and differs from it further as follows: The median propodeal 

 areas are wider and slightly concave; the nervulus is distinctly post- 

 f ureal and nearly perpendicular; the first tergite is so much depressed 

 that the petiole is much broader than thick, broadly flattened both 

 above and below, and the postpetiole scarcely thicker than the petiole; 

 the lateral fovea very deep, the area in front of it distinctly concave, 

 and the dorso-lateral carina very strong and curving around the 

 fovea; the postpetiole broader than long with the dorsal impressions 

 large and deep; second tergite scarcely a half longer than broad at 

 base, its sides widely divergent, barely a third longer than fourth; 

 ovipositor sheath less than one and one-half times as long as first 

 tergite. 



Paratypes h, c, and d vary in that order from paratype a to the 

 type, and e and / vary from the type toward paratype g. The 

 species is very constant in color, about the only variation being in 

 the extent of red on the tergites. 



The male is more slender than the female, has the scape and the 

 front and middle coxae paler, but otherwise is very similar. The 

 only males in the type series are one corresponding to the larger 

 females and one corresponding to the smaller females. The larger 

 (tlie allotype) is 8.5 mm. long and the smaller (paratype 7t) 5.5 mm. 



