6 Journal New York Entomological Society, [^'o'- xxviii. 



r inserted a short distance beyond the line of the cord ; cell ist M„ long and 

 narrow, about as long as vein Mj + o beyond it, longer than M^ beyond it; basal 

 deflection of Cmi at about one fourth the length of cell ist M,. 



Abdomen reddish. Hypopygium weakly armed ; an outer flattened pale 

 blade that bears a few long setae ; a long-curved appendage that terminates in 

 a blackened needle-like point ; an inner, bifid heavily chitinized appendage with 

 the anterior blade flattened, the edge indistinctly two-toothed, truncated or 

 slightly concave ; penis-guard stout, the tip blackened. 



Habitat. — Brazil. 



Holotype, J*, Prata, Para, June 30, 1919 (H. S. Parish). 

 Teucholabis mendax is readily told from all its relatives by the 

 unusually pale banded wings and the shining black head. 



Teucholabis persimilis new species. 



General coloration light brown, the pleura yellow, wings yellow, crossvein 

 r lacking, veins issuing from cell ist Mn long. 



Female. — Length, 4.6 mm. ; wing, 4.5 mm. 



Rostrum pale brown, the palpi darker. Antennae unusually long for this 

 genus of flies, if bent backward extending to beyond the wing-root ; brown, the 

 basal segment a little paler; flagellar segments long-cylindrical with long ver- 

 ticils and a dense white pubescence. Head brownish yellow, sparsely white 

 pruinose ; vertex between the eyes broad. 



Pronotum yellowish medially, the scutellum more whitish, the pleural 

 regions more brownish. Mesonotum light brown, sparsely pollinose, the 

 median area of the scutum and 'postnotum more yellowish. Pleura yellow, the 

 dorsal pleurites somewhat darker. Halteres brown, the knobs dark. Legs dull 

 yellow, the terminal three or four tarsal segments dark brown ; claws small, 

 untoothed, empodia conspicuous. Wings with a strong yellowish tinge ; stigma 

 indistinct, grayish ; veins brownish yellow. Venation : Sc rather long, Scj^ very 

 long, extending to beyond midlength of the long sector, Sc2 far from the tip 

 of Sci and slightly proximad of the origin of Rs; r lacking; veins i?2+3 and 

 i?4+5 long, curved caudad and running parallel at their ends ; cell ist Af, nar- 

 row, shorter than the veins issuing from it; basal deflection of Cu^ a short dis- 

 tance beyond the fork of M. 



Abdominal tergites dark brown, the sternites more yellowish. Ovipositor 

 with the valves long and slender, strongly upcur-ved, the tips acute. 



Habitat. — Brazil. 



Holotype, 5, Igarape-Assii, Para, July 15, 1919 (H. S. Parish). 



This curious little fly is referred to the genus Teucholabis with 

 considerable doubt. The radial cross-vein is completely lacking and 

 vein Sc^ is very long for a member of this genus of flies. T. per- 

 similis bears a great resemblance to T. parishi Alexander (Psyche, 



