184 [June 



fined, the central area large, quadrate, polished. Wing^ fuliginous ; 

 nervures and stigma black; areolet 5-angular or subtriaugular. Legs 

 yellowish rufous, the coxae tinged with piceous, the tarsi obfuscated at 

 tips. Abdomen stout, subovate, polished, finely and uniformly punc- 

 tured, indistinctly so at tip ; basal segment rather broad at tip. biline- 

 ated, black, its extreme apical margin rufous, as well as the whole of 

 the 2nd and ord segments except the apical margin of the latter which 

 is blackish ; remaining segments black ; basal foveas of the 2nd seg- 

 ment obsolete ; beneath as above 3 ovipositor not exserted. Length 4 

 lines ; expanse of wings 6 lines. 



Hah. — Rocky Mountains, Colorado Territory. 



Ich. rufiventru Brulle and Ich. detritus BruUe also belong to this 

 Section, the last of which is unknown to me. 



Section 9. 

 74. Ich. terminalis. n. sp. 



Rufous, head, mesothorax, pleura and apical segments, except a white spot 

 at tip, blackish ; antennae with a white aunulus ; scutellum yellow ; wings 

 clear; central area of metathorax moderate, subquadrate. 



Female. — Head blackish, palpi pale 5 antennae about half the length 

 of the body, slightly involute, the basal joints somewhat rufous, the 

 9th to l4th joints pure white, the apical joints brown-black. Tho- 

 rax minutely punctured, black, with a large rufous stain on the pleura ; 

 tegulge pale rufous ; scutellum flat, polished, pale yellow ; metathorax 

 densely punctured, entirely pale rufous, the elevated lines tolerably 

 well defined, the central area subquadrate. Wings hyaline, iridescent ; 

 nervures fuscous, stigma pale ] areolet 5-angular or subtriaugular, the 

 2nd recurrent nervure sinuate. Legs pale rufous, tips of the posterior 

 femora and tibiae blackish, their tai'si obfuscated. Abdomen stout, 

 subovate, pale rufous ; petiole slender ; basal segment bilineated, pol- 

 ished ; 2nd and 3rd segments finely and densely punctured, the basal 

 foveae of the former obsolete ; apical segments smooth and polished ; 

 the 4th, except its basal margin, and the remaining segments black ; 

 a small spot on the middle of the 6th and the whole of the 7th above, 

 pure white ; ovipositor not exserted. Length 3^ lines ; expanse of 

 winiis 5i lines. 



//a ^.—Delaware. Dr. Thos. B. Wilson. 



