78 HYMENOPTERA. 



out a distinct neck being more uniform in width and the apex trun- 

 cate, not especially broadened, the uncus acute, arising near the apex 

 and casually, making it appear to be broadened and sharpened at one 

 end. Further, the fore wing is narrower, the venation does not reach 

 half-way to the extreme apex as it does in the other species and the dis- 

 cal ciliation is denser and more uniform, does not extend proximad of 

 the distal end of the stigmal vein and the oblique line of cilia running 

 proximo-caudad from the stigmal vein, prominent in the other species, 

 is absent here. The discal ciliation is nearly normal but 3 or 4 lines 

 strictly being in regular rows longitudinally. The posterior wings are 

 narrower, with nearly parallel margins, slender, not moderately stout ; 

 otherwise the same but the caudal line of discal cilia is slightly more 

 distinct, the cilia somewhat closer in the line. Mandibles with three 

 acute teeth. 



From 1 specimen, i-inch objective, 1-in choptic, Bausch 

 and Lomb. 



Male. — Unknown . 



Redescribed from a single female specimen taken on the 

 glass sides of a greenhouse on the campus of the University 

 of Illinois, Urbana, Illinois, April 30, 1910. Since drawing 

 up this description I have captured, on the small windows of 

 stables, a female at Litchfield, Illinois, July 13, 1910, and 

 one at Butler, Illinois the day following (see following). 



Habitat. — United States : ( Lake Forest, Urbana and Butler) 

 Illinois. 



Types. — Type No. 13,633, United States National Museum, 

 Washington, D. C, 2 slides, 2 9 's and 9 head in xylol-bal- 

 sam respectively, both originally on tags labelled " 134," 

 and " Trichogramnia acuminatum " / also 1 homotype 9 in 

 xylol-balsam (Litchfield, Illinois, July 13, 1910). The ori- 

 ginal specimens are less fit for study than the homotype. 

 Cotype. — Accession No. 44,192, Illinois State Laboratory of 

 Natural History, Urbana, Illinois ; 6 9 's in xylol-balsam, 

 labelled "134" and "3756°, Iss. Sep. 10, '85", all on a 

 single slide remounted from tags ; also a 9 head in xylol- 

 balsam taken from the other specimens. Also a homo- 

 typical 9 bearing the same number (Urbana, Illinois, Apr. 

 30, 1910). 



I first became acquainted with the species during April, 

 1910, when a single female was captured. The species was 



