RY <;. U. HAUDV. 75 



Wings cut sharply into a basal and hyaline half, the 

 dividing line being greatly sinuated so that the 

 prolongations of the brown encroach on the 

 hyaline portion. concisa, Macq. 



Wings with the base and costal half suffused with 

 brown, which melts gradually into the hyaline 

 portions without any distinct line of demarca- 

 tion. 3. 



Scutellum testaceous, abdomen with the sides testa- 

 ceous, obscnra, Macq. 



Scutellum black. 4. 



Abdomen with two white bands. alternans, Macq. 



Abdomen with white spots. comviista, Macq. 



Wings completely hyaline, pubescence at sides of 

 thorax yellowish white, small species. 



mbwr, Macq. = ?vitrea. Walk. 



Wings practically hyaline, but a little darker alonq 

 the course of the closely adjacent mediastinal 

 and subcostal veins; pubescence at sides of 

 thorax fulvous, small to middle sized species. 



nigricostata, Macq. 



Wings hyaline; yellow haired species; abdomen with 

 black hairs on sides of fourth and fifth seg- 

 ments; large species. flaveola, Macq. 



Wings hyaline, but largely suffused -with brown from 



the base; large species. albirufa, Walk. 



Wings hyaline with base and costal margin brown. 6. 



Large species (usually about 12 mm.) 7. 



Small species (5 to 8 mm.) 8. 



The brown colouration on the foremargin never 

 descends so far as the bifurcation of the radial 

 and cubital veins, which are always clear; the 

 black pubescence on sides of abdomen is con- 

 fined to the third and subsequent segments, that 

 on the second basal segment being pale yellow. 



Tnarginata, 'Wa\k. = ffuscicostata, Macq. 



The brown colouration of the foremargin covers the 

 bifurcation of the radial and cubital veins; the 

 black pubescence on the sides of the abdometi 

 commences on the second segment. vclox, White. 



Pubescence at base of abdomen yellowish-white; 



wings rather dull. simplex, Macq. 



{A. pelhicida, Walker, belongs here, but I cannot say 

 whether or not it is distinct.) 



