OF WASHINGTON. 277 



hyaline, the venation pallid. Abdomen sessile, oblong-oval, a little 

 longer than the head and thorax united, subcompressed at apex and end 

 ing in a long ovipositor. 



In the male the head and thorax are black, the abdomen reddish-brown ; 

 anterior orbits, face below antennae, mouth-parts, two basal joints of an 

 tennae, prothorax, tegulas, legs and sutures of the abdomen, yellowish- 

 white, while the antennas are a little longer, more slender toward apex, 

 and composed of 25 joints. 



Hab. Cayuga Lake, Ithaca, N. Y. 



Types in Collection Cornell University and Coll. Ashmead. 



Described from i <$ and 2 9 specimens received from Prof. J. 

 Henry Comstock, collected by Mr. Herbert H. Smith. 



Mr. Smith's record of the capture of a pair of these insects 

 reads: " Swept from foliage in woods, in copula, at Norton's 

 Landing, Cayuga Lake, June 26, 1872." 



For some years past I have given considerable study to the 

 Ichneumonidae, basing my studies upon those of Forster's Synop 

 sis, and in order to show the position that this new subfamily 

 should hold in the family I would propose the following arrange 

 ment of the subfamilies and tribes : 



Family ICHNEUMONID^E. 

 Subfamily I. LYSIOGNATHIN^E. 

 Subfamily II. OPHIONIN^:. 

 Tribe I. Anomalonini. 

 II. Trachynotini. 



III. Porizonini. 



IV. Pristomerini. 

 V. Cremastini. 



VI. Hellivigiini. 

 VII. Ophionini. 

 VIII. Campoplegini. 

 IX. Banchini. 



X. Mesochorini. 

 XI. Fleet ictni. 

 XII. Agriotypini. 

 Subfamily III. TRYPHONIN^E. 

 Tribe I. Mesoleptini. 

 II. Exenterini. 



III. Ctenopelmini. 



IV. Tryphonini. 

 V. Exochini. 



VI. Trachydermatini. 

 VII. Orthocentrini. 

 VIII. Bassini. 

 IX. Sphinctini. 

 X. 



