246 ' THE CANADIAN ENTOMOLOGIST 



SOME NEW SPECIES OF THE GENUS LONCH.EA 

 (DIPTERA, LONCH.^ID^). 



BY J. R. MALLOCH, 

 Uabana, 111. 



Lonchaea major, sp. n. 



Male.- — Shining black, with a slight bluish tinge. Antennae and palpi 

 black; arista yellowish at base. Legs pitchy black, the hind tarsi hardly paler 

 than their tibiae. Wings hyaline, veins brownish yellow, whitish at bases. 

 Calyptrae white, fringes concolorous except at junction of upper and lower, 

 where there are some long, black, setulose hairs. Halteres black. 



Eyes bare; frons about twice as long as wide, parallel-sided, surface with 

 short, moderately dense hairs; upper orbits slightly rugose above, bare; frontal 

 lunule hairy; longest hairs on arista over twice as long as its basal diameter; 

 third antennal segment about four times as long as its width, extending to mouth 

 margin. Scutellum with setulose hairs on margins and between apical bristles, 

 the disc bare; pteropleura bare; no hairs adjacent to the stigmatal bristle. 

 Abdomen broad, with rather dense, short, setulose hairs on dorsum; fourth 

 tergite about 1.5 as long as third. Hind femur without distinct anteroventral 

 bristles. Auxiliary vein almost fused with first at its apex. 



Length 6.5 mm. 



Type. — Amazon, South America. T^^pe in British Museum. 



Lonchaea nigrocaerulea, sp. n. 



Male. — Blue-black, almost metallic in colour. Antennae and palpi black; 

 arista pale at base ; upper orbits and ©cellar triangle glossy. Legs black. Wings, 

 calyptrae, and halteres as in major. 



Frons about L5 as long as wide, sparsely hairy; upper orbits highly glossy 

 smooth; third antennal segment about four times as long as wide, extending 

 below mouth margin; arista as in major; palpi dilated, slightly protruded. 

 Praescutellar acrostichals very long; scutellum as in major; pteropleura bare; 

 no bristly hairs adjacent to stigmatal bristle. Abdomen with longer hairs 

 than in major, especially at apex of fourth tergite; fourth tergite about twice as 

 long as third. Venation as in major, but the antepenultimate section of fourth 

 vein is only two-thirds as long as penultimate, whereas in major it is three- 

 fourths as long. Hind femur with a few distinct anteroventral bristles. 



Length 4 mm. 



Type.- — Barbados (E. F. Becher). Type in British Museum. 



Lonchaea striatifrons, sp. n. 



Ma/e.— Glossy steel-blue, the abdomen paler than the thorax. Frons 

 shining black, ocellar spot and upper orbits glossy blue; third antennal segment 

 reddish at base below. Legs black, tarsi with the exception of the apical two 

 or three segments reddish testaceous. Wings clear, yellow at bases. Calyptrae 

 white, fringes concolorous. Halteres black. 



Frons less than twice as long as wide at anterior margin, not distinctly 



November, 1920 ' 



