134 



DIPTERA OF NORTH AMERICA. 



[PART IV. 



men with seven segments, short ; the forceps with stout, obtuse 

 appendages ; ovipositor long, with a gently arcuated tip. Feet 

 long and slender ; the tibiae without spurs ; empodia indistinct ; 

 ungues smooth. Wings comparatively long ; longitudinal veins 

 pubescent, the margin fringed with hairs ; the auxiliary vein ends 

 in the costa about the middle of the length of the wing ; second 

 longitudinal vein not forked, connected by a cross-vein with the 

 first longitudinal vein ; third longitudinal vein not forked ; the 



fourth longitudinal vein is 

 forked a short distance from 

 the small cross-vein ; its prin- 

 cipal branch runs straight 

 to the margin ; the anterior 

 branch is forked ; the branches 

 of this fork are longer than 

 the petiole ; fifth and sixth veins straight ; the seventh is some- 

 what sinuated ; no discal cell ; the subcostal cross-vein is very 

 near the origin of the prsefurca ; the great cross-vein is in the 

 middle of the wing, quite far from the branching of the fourth 

 vein ; hence, the second basal cell is almost half as long as the 

 first ; the anal angle of the wing rounded, but little projecting. 



"Type of the genus T. calceata Mik, found near G-ortz, in 

 Illyria. The author describes it as a very delicate, pale yellow 

 species, about 0.2 lin. long, with dark brown tips of the femora 

 and of the tibiae, looking like Erioptera imhuta Meig. It is on 

 the author's authority that I leave this genus among the Limno- 

 bina anomala, to which he refers it. 



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