SCATOMYZIDyE. 131 



('). One storiiopk'ural bristle. ........ 7 



Two sternoi)leur;il bristles. ........ 9 



Three sternopleural bristles. ....... 10 



7. Eyes nearly twice as high as long; front convex ; antennae short, situ- 



atedlow down .- pale yellow species. . Leptopa Zetterstedt. 



Eyes but little higher than long; antenna; as long as the face; oral 



border with a single, anteriorly directed bristle. ... 8 



8. Third antennal joint broad; front convex; arista distinctly plumose; 



tive dorsocentral bristles present; moilerate sized, shining yellow 



species. ...... MEGOrnxHALMA Becker. 



Third antennal joint long and slender, arista naked ; four dorsocentral 



bristles; shining black species. . . Microp.selapha Becker. 

 D. Antenna; as long as the face, third joint rounded, strongly pubescent; 



four dorsocentral, two scutellar bristles ; hind tibia; with two pairs 



of exterior bristles; shining black. . Hexamitocera Becker. 

 Antennse long as the face, third joint with a sharp upper corner ; arista 



geniculate in both sexes ; five dorsocentral, four scutellar bristles ; 



hind tibiffi with three pairs of bristles ; small, grayish dusted species. 



Gonathekl's Rondani. 



10. Male arista distinctly geniculate. 11 



Arista geniculate in neither sex. ....... 12 



11. Third antennal joint long and broad, with an acute upper angle; arista 



short, bare; four scutellar bristles ; dark gray-dusted, bristly species. 



GoNARCTicus Becker. 



Third antennal joint long and narrow with rounded upper angle; arista 



finely plumose; two scutellar bristles; shining black, bristly species. 



Cnemopogon Kondani. 



12. Arista distinctly hairy ; four scutellar bristles; hind tibise with three 



pairs of exterior bristles. .... Okthach.eta Becker. 



Arista bare ; antennae long, third joint usually angulated above ; two 



scutellar, two pairs of tibial bristles. . Amaurosoma Becker. 



1?.. Eyes circular; antennae long, rounded at tip; palpi of usual length 



somewhat broadened distally ; abdomen very short. 



Spatuiphvllus Becker. 

 Eyes somewhat elongate; antenna' long, angulated at tip; palpi much 

 dilated its whole length ; abdomen not remarkably short. 



rsELAPn^)pniLA Becker. 

 IIYDK0MYZIX71<:. ^■ 



1. Eyes and head round ; thorax with five dorsocentral bristles. . 2 

 Eyes and head oval, higher than long; one dorsocentral bristle; an- 

 tenna; short; abdomen flat; third and fourth longitudinal veins con- 

 vergent; large, bare grayish dusted sjx'cies. Ih dkomyza Fallen. 



