128 INSECUTOR INSCITI^ MENSTRUUS 



Tipula ilUnoicns'is, n.n., for T. versicolor Loew (1863), non T. versi- 

 color Gmelin (1792), p. 2S19. 



Tipula ignota, n.n., for T. discolor Loew (1863), non T. discolor 

 Gmelin (1792), p. 2819. 



Tipula iroquois, n.n., for T. cincta Loew (1863), non T. cincta Gmelin 

 (1792), p. 2820. 



Tipula labradorica, n.n., for T. tesselata Loew (1863), non T. tesselata 

 de Villers (1789), p. 397. 



Tipula senega, n.n., for T. pallida Loew (1863), non T. pallida de Vil- 

 lers (1789), p. 389. 



Tipula ultima, n.n., for T. flavicans Fabricius (1805), non. T. flavicans 

 de Villers (1789), p. 403. 



Stygeropis unimicra, new species. 



Male. — Length, 10 mm. ; wing, 12.3 mm. 



Palpi dark brownish black. Frontal prolongation of the 

 head short, light gray, the nasus long, slender. Antennae rather 

 long, the basal segments dull yellow soon passing into dark 

 brown ; the third to fifth segments are produced apically to 

 give a subserrate effect; terminal segment tiny, attenuated. 

 Head dull, dusky gray, narrowly lined with black, clearer on 

 the sides of the occiput; a shallow depression behind the an- 

 tennal bases ; front produced cephalad between the antennal 

 bases as a slender tongue. 



Mesonotal prsescutum dull grayish brown with three dark 

 brown stripes, the middle one of which is indistinctly bisected 

 by a gray line ; scutum with the lobes gray marked with brown ; 

 scutellum and postnotum gray. Pleura clear light gray with 

 the dorso-pleural membranes brownish yellow. Halteres short, 

 light yellow, the knobs elongated, brown. Legs with the coxae 

 pale, densely gray pruinose ; trochanters yellow ; femora dull 

 yellow, the apical half browner; tibice dull yellow passing into 

 brown toward the tip ; tarsi brown. Wings brownish gray, the 

 costal region slightly brighter ; stigma brown ; veins dark 

 brown ; a broad vitreous band before the cord extending into 

 the base of cell M^. 



Abdominal tergites dark brown with a sparse gray bloom ; 

 segments 3 to 9 with the caudal margin narrowly ringed with 

 silvery yellow ; lateral margins of the segments almost white ; 

 sternites light gray, broadly ringed with paler caudally. Hy- 



