124 MYCETOPHILlDyE. 



9. Abdomen with belly red fiammiventris, sp. n., 



Abdomen with a conspicuous red lateral [p. 129. 



stripe, often broken up into a row of 



spots wdica, Walk., p. 130. 



10. The 1st longitudinal vein ends distinctly 

 beyond fork of 4th vein but sometimes 



only shortly so 11. 



The 1st longitudinal vein ends exactly 



opposite fork of 4th vein * 14. 



1 («). All the coxae and femora bright yellow, [p. 130. 



tibiae and tarsi black Jlavofemorata, sp. n., 



(b). Fore femora distinctly yellow or yellow- 

 ish, posterior femora black or very [p. 131, 



dark brown diversipes, sp. n., 



(c). All the femora black ur blackish, or 



at most pale brown 12. 



12. The 1st lon-itudinal vein ends at two- [p. 133. 



thirds of the length of the wing lonrjinercis, sp. n., 



The 1st longitudinal vein ends at or about 

 the middle of the wing 13. 



13. Larger species (5-0 mm.); 1st longitudinal 



vein ends a little beyond fork of 4th [p. 131. 



vein ; wings and legs black nigi-ipeymig, sp. n., 



Smaller species (4-5 mm.); 1st longitudinal 

 vein ends considerably beyond fork of 



4th vein ; wings pale blackish, legs pale [p. 132. 



dirty brown fraterctda, sp. n., 



14. Shoulders black exucta, sp. n., p. 132. 



Shoulders reddish yellow flavicollis, sp. n., 



15. Wings with a wide infuscated band across [p. 134. 



the middle fascipeimis, sp. n.. 



Wings witliout markings 16. [p. 136. 



16. Thoracic dorsum mainly reddish yellow 



or brownish yellow ; witli or without 

 stripes (the stripes in latelineata occupy- 

 ing nearly tlie entire dorsum) 17. 



Intermediate species between groups 17 



and 24 with chestnut-brown thorax . , inconspicua, sp. n.. 



Thoracic dorsum mainly black or blackish [p. 142. 



brown 24 



17. Flagellum of antennae black, or at most, 



part of 1st joint yellow 18. 



Flagellum with at least the two basal 



joints wholly yellow 23. 



18. Thorax unstriped 19. 



Thorax with tliree distinct stripes 21. 



19(a). Scutellum with six long stift" hairs on 



posterior margin se,r'seios«,sp.n.,p.l37. 



(b). Scutellum with four similar long stiff quadrisetosa, sp. n., 



hairs [p. 137. 



(c). Scutellum with two similar long stiff ' 



hairs 20. 



Within verv close limits, a small individual variation must be allowed for. 



