116 DIPTERA OF NORTH AMERICA. 



1. T. conitoinata LOEW. 9 Seta antennarum albo-plumosa ; thorax 

 vittatus ; alse maculato-reticulatse, maculis fascias duplicatas efficienti- 

 bus, limbo marginis antici obscuro nullo. 



Bristle of the antennae plumose with white, thorax striped, wings reticu- 

 lated with dark spots forming double bauds, costal border without dark 

 margin. Long. corp. 0.26. Long. al. 0.22. 



STN. Tetanocera combinata LOEW, Wien. Ent. Monatsch. Ill, 295. 



Reddish-brown, more acorn-colored on the abdomen. Front dark 

 yellow with the middle stripe broad, impressed, polished, narrowed 

 anteriorly, a small black dot being on each side near the orbit, 

 and a second more anteriorly between the antennae and anterior 

 corner of the eye. The face white, not much receding, rather ex- 

 cavated in the middle. Antennae yellow, third joint short, with 

 the upper edge margined with blackish and not distinctly excised ; 

 the antennal bristle yellowish at the base, with a white plumation 

 of moderate length. Upper side of the thorax almost brownish- 

 ferruginous, with broad lateral borders dusted with whitish; the two 

 longitudinal stripes in the middle are blackish and covered with 

 dense white dust. The scutellum is of the same color as the upper 

 side of the thorax, and has the sides dusted with whitish. The 

 pleura too resemble the upper side of the thorax in their color, 

 appearing however, with the exception of a longitudinal stripe on 

 their superior part, of a paler shade, on account of their whitish dust. 

 Immediately before the poisers there is a very conspicuous, rounded, 

 brownish-black spot. The abdomen is more acorn-colored ; it has 

 a black middle stripe not sharply bordered and interrupted at the 

 incisions, and a rather broad, polished, brownish-red stripe at 

 some distance from each lateral border. Legs brownish-yellow, 

 the tibia3 a little darker than the femora ; the tarsi blackish towards 

 their tip. Wings rather yellowish, having the reticulation formed 

 by narrow, gray stripes in the middle of the intervals and by 

 brown spots reaching from the longitudinal veins as far as these 

 stripes ; the brown spots are arranged so as to form distinct double 

 bands running across the wing; the last of these bands is at the 

 very tip of the wing, the penultimate runs between it and the pos- 

 terior transverse vein ; the antepenultimate runs over the posterior 

 transverse vein itself; there is besides, anteriorly, the beginning of 

 a double band before the penultimate band ; the small transverse 



