TRYPETIDAE. 79 



ish-yellow, below with black hairs, the bristles mixed among them 

 black. The abdomen usually bears two rows of large blackish 

 spots, of a rather quadrangular form, leaving between them a 

 brown middle streak, and not completely reaching the posterior 

 borders of the single segments ; sometimes they extend so much, 

 that only the posterior borders of the segments retain a paler color, 

 whereas the whole surface is blackish. Borer blackish-brown, 

 sometimes with a red spot on each side, a little pointed, rather flat; 

 its first segment is a little longer than the two last segments of the 

 abdomen taken together. The hairs of the abdomen are mostly 

 black, a few light ones being among them. Legs paler reddish- 

 brown, the anterior femora often partly blackened, with some black 

 bristles on the upper and under sides. Wings exceedingly broad, 

 with the uninterrupted whitish seam of the tip forming a narrow 

 crescent ; on their surface there are numerous clear drops rather 

 equally scattered, but totally wanting in that part of the black 

 color which adjoins the white crescent, as well as before the first 

 longitudinal vein. At the tip of the first longitudinal vein, a small, 

 clear, but little distinct stripe is seen. The small transverse vein 

 straight and perpendicular, the posterior one a little curved and 

 steep. 



Hob. Northern Wisconsin. (Kennicott.) 



Observation. I possess a specimen, which is distinguished by its 

 much paler, almost dull testaceous color, its less enlarged wings 

 and the somewhat larger size of the clear drops, but as to the other 

 characters agrees so perfectly with the ordinary specimens of Tryp. 

 sparsa Wied. that I do not venture to declare it a different species. 



13. T. rotimdipeimis LOEW. $ . (Tab. II, fig. 14.) Fusca, alis 

 latissimis, rotundatis, nigris, albido-guttulatis et in marginibus ante- 

 riore et apicali maculas minutas albidas gerentibus. 



Brown ; wings broad and rounded, black, with very small whitish drops 

 in the middle, and small whitish spots on the costal and apical borders. 

 Long. corp. 0.28. Long. al. 0.26. 



Of this species I have only one specimen, which is unfortunately 

 so much injured in the journey as to prevent me from giving a 

 full description. However, as it is very nearly related to Tryp. 

 sparsa Wied., it will be recognized even from my incomplete de- 

 scription. The color is the same ; the wings are still shorter and 

 broader, especially the cell which lies before the first longitudinal 



