AET. y FLIES OF THE FAMILY SYRPHIDAE SHANNON 7 



black; ocellar and frontal triangles with black pile; antennal pits 

 confluent; antennae fairly large, dark brown, reddish brown on lower 

 portions ; arista longer than antenna, reddish brown ; face pale polli- 

 nose and pilose, save on the small shining tubercle; face receding 

 downward, narrow, being about one-fourth the width of the head; 

 mesonotum bronzy aeneous with fulvous pile; legs black, the apices 

 of femora and bases of tibiae yellowish brown ; fore legs unmodified ; 

 abdomen black; tergites two, three, and four, each with a pair of 

 large, subquadrate, yellow spots; wings slightly smoky; apical cross 

 vein nearly in line with posterior cross vein ; halteres yellow. Length 

 8.5 mm. ; wing 8 mm. One male. 



Differs from X. hucephalus (Wiedemann) in having an additional 

 pair of yellow abdominal spots present on second tergite. 



Type locality. — Rurrenabaque, Beni, Bolivia (W. ]M. Mann, Mul- 

 ford Biological Expedition), 1921-22. 



Tyj>e.—C2Lt. No. 28754, U.S.N.M. 



Genus BRAZILIANA Curran 



Braziliana Curran, Ann.. Mag. Nat. His., ser. 9, vol. 16, 1925, p. 243. 

 Genotype. — {Melanostoma) Braziliama longicomis (Williston), by 

 original designation. 



BRAZILIANA PERUVIANA, new species 



Male. — Closely allied to the genotype. Antenna elongate and 

 slender, the first joint more than four times as long as broad, rather 

 gently but distinctly bent basally, the outer two-thirds directed 

 obliquely downward; second joint less than half the length of the 

 first ; the third nearly as long as the first ; arista nearly equal to the 

 combined length of the first two joints; face black, the sides with 

 violet and coppery reflections, broadly poUnose and punctate ; meso- 

 notum bronzy aeneous with a pair of rather broad but very indis- 

 tinct, pollinose stripes, clothed with brownish pile; anterior legs 

 golden yellow, tarsi darker; midfemur brownish, becoming yellow 

 apically, tibia and tarsus yellow ; hind femur yellow on basal f ourth> 

 suddenly becoming shining very dark brown on remaining portion; 

 tibia shining dark brown ; tarsus yellow ; abdomen very slightly con- 

 stricted, blackish ; third tergite with a pair of rather obscure yellow 

 spots ; wings entirely brownish. Length, 9 mm. ; wing 7 mm. 



One male. 



B. lonfficornis differs in having the wings largely hyaline; the 

 abdomen of the male is more constricted, as " it does not attain its 

 full width till the tip of the third segment." 



Type locality. — Rio Charape, Peru (September 13, C. H. T. Town- 

 send). 



Type.— Cat. No. 28755, U.S.N.M. 



