1865.] 251 



the length of the body, dull black, slender at tips, scape beneath yellow. 

 Thorax polished, minutely punctured, the punctures more distinct on 

 the pectus and pleura which are somewhat striated; tegulae, a short 

 line before and another beneath, bright yellow ; scutellum flat, polished, 

 feebly punctured, bright yellow, in one specimen with a large cordate 

 yellow mark truncate at tip and covering nearly the entire surface ; 

 metathorax finely rugose, opaque, the elevated lines sharply defined, 

 the central area rather large, rounded before, and open behind. Wings 

 subhyaline, stained with yellowish-fuscous, especially towards the tips ; 

 nervures pale fuscous, yellowish at base, the stigma tinged with ferru- 

 ginous ; areolet subtriangular ; the cubital nervures with a short rudi- 

 mental nervure within the submarginal cell. Legs bright yellow, 

 shining; the four anterior femora tinged behind with fulvous, with a 

 black spot at base ; posterior coxae, basal joint of the trochanters within, 

 and their femora except extreme base and apex, black, tips of their 

 tibite dusky. Abdomen dull black, closely and finely punctured ; basal 

 segment bilineated, rugose, somewhat striated ; basal foveas of second 

 segment small, deep and striated ; extreme lateral margins of the second 

 and following dorsal segments and the two apical segments entirely, 

 fulvous; beneath fulvous, shading into yellow at base, the basal seg- 

 ment black. Length G — 6| lines; expanse of wings 9? — 10 lines. 

 Two specimens. 



15. Ichneumon variegatus, Cresson. 



Ichneumon variegatus, Cresson, Proc. Ent. Soc. Philad. iii, p. 153. 



Twenty-seven % specimens. This species varies greatly in the mark- 

 ings, especially of the abdomen ; the large yellow mark on the meta- 

 thorax is sometimes much reduced, and often assumes the shape of a 

 W ; the postscutellum is sometimes yellow and sometimes black; the 

 basal segment of the abdomen is always black, occasionally with a yel- 

 low band at tip or a minute yellow dot on each side; the second and 

 third segments vary from entirely yellow to entirely ferruginous, but 

 generally the former has the basal half yellow and the apical half fer- 

 ruginous, and the third segment entirely yellow, the incisures are more 

 or less broadly black, sometimes forming a band, dilated in the middle; 

 in one specimen the second segment is yellowish-ferruginous, with the 

 base and a quadrate spot on each side at tip, black ; the remaining seg- 

 ments are generally dark ferruginous, with a black band across the 

 base, sometimes much dilated in the middle and forming a quadrate 

 mark covering one-half or two-thirds of the segment, and the extreme 

 apical margins of the segments are sometimes yellowish ; two specimens 

 have no ferruginous color whatever on the abdomen, it being yellow 



