222 PSYCHODID^E. 



8. The 2nd longitudinal vein forks very 



closely before or bevond the base of the 



3rd vein ." 9. 



The 2nd longitudinal vein forks considerably 

 beyond the base of the 3rd vein 11. 



9. Fore metatarsus wholly white-scaled .... yeniculata, Brim., 

 Fore metatarsus never wholly white-scaled [p. 227. 



(at the tip only in P. albonigra and not 



at all in P. bengalemis) 10. 



10. Wings with thick black bushy hair on 



costa, with small spots (each composed of 

 one or two white scales) placed along a 

 considerable section of it, at apparently 

 regular intervals. The 2nd longitudinal 

 vein forks immediately before the base of . 

 the 3rd vein; 'the fork of the anterior 

 branch of the 2nd vein opposite that of 



the 4th vein albonigra, Brim., p. 228. 



Wings with only normally blackish grey 

 hair; scale-spots wholly absent. The 

 2nd longitudinal vein forks barely beyond 

 the base of the 3rd vein ; the fork of the 



anterior branch of the 2nd vein a little [p. 229. 



beyond that of the 4th vein bengalensis, Brim., 



11. W T hite scale-spots absent from tips of veins. 



Tips of tibiae and metatarsi not white- 

 scaled distans, Brun., p. 230. 



White scale-spots present at tips of veins. 

 Tips of tibiae and metatarsi with white 

 scales albopicta, Brun., p. 231. 



12. Veins of wings wholly without rows or 



spots of distinct scales 13. 



Veins of wings with distinct scales on the [p. 231. 



basal fourth of all of them orbicularis, Brun. ; 



13. The 2nd longitudinal vein forks beyond the 



base of the 3rd vein. Hairs on veins 

 uniformly blackish no conspicuous 

 lighter sections of hairs. The middle 

 veins (2nd, 3rd and 4th) nearly straight 



or gently bisinuate 14. 



The 2nd longitudinal vein forks before the 

 base of the 3rd vein. Hairs on veins 

 mainly blackish, but with a transverse 

 band of light brown hairs, formed by a 

 short row placed beyond the middle part 

 of each vein, in the distal portion of the 

 wing. The middle veins (2nd, 3rd, 4th) 

 distinctly arcuate , vittata, Brun., p. 233. 



14. Thorax with blackish grey hairs. Anterior 



branch of 2nd longitudinal vein forking a 



little beyond the middle of the wing, the [p. 232. 



4th forking a little before the middle . . nigripennis, Brun., 

 Thorax with bright yellowish brown hairs. 

 Anterior branch of 2nd vein forks as in 



P. nigripennis, but the 4th vein forks near. [p. 233. 



base of wing fulcohirta, Brun., 



