]Mr. J. H. ^[jiUocli on Exotic Muscaiidai. 577 



lower calyptra much protruded; ab- 

 domen ijreyish pruirio.sc, opaque, with 



paired dorsal black spots 10. 



Wings unicolorous hyaline 11. 



10. Paired black spots on dorsum of abdomen 



fused, larg-o, aud rather poorly defined ; 

 apical half of wing very conspicuously 

 blackened; fifth sternite in male entirely 



opaque grey pruiuose seiiiifumosa, Stein. 



Paired black spttts on dor.%um of abdomen 

 widely separated, sometimes indistinct ; 

 apical half of wing inconspicuously in- 

 f uscated ; inner half of each process of 

 fifth abdominal sternite of male shining, 

 outer half opaque grey pruinose semtalha, sp. n. 



11. Lower calyptra barely protruded beyond 



upper ; abdomen with gi-ey pruinescence, 

 and dorso-ceutral -vitta aud paired spots 



black fallax, Stein. 



Lower calyptra protruded very much be- 

 yond upper 12. 



12. Abdomen glossy black, with grey pruines- 



cence ou each tergite at the anterior 

 lateral angle on dorsum, not with dis- 

 tinct paired spots 12 «. 



Abdomen opaque grey pruinose with paired 

 spots and sometimes a central vitta on 



dorsum 13. 



12o.Ijegs black; arista quite distinctly haired . . pilifermcr, Steiu. 



Knees and bases of tibiie yellow ; arista 



with short pubescence fascigera, Stein. 



13. Bases of fore tibije narrowly pale yellowish ; 



male without series of median spots on 

 dorsum of abdomen ; outer cross-vein of 

 wing at not more than its own length 



from apex of fifth vein semialbciy sp. u. 



Fore tibise black ; male with a very dis- 

 tinct series of black spots on middle of 

 dorsum of abdomen ; outer cross-vein 

 of wing at distinctly more than its own 

 length from apex of fifth tripnnctiventris, sp. n. 



14. Arista with exceptionally long hairs, the 



longest about as long as length of third 



antennal segment 15. 



Arista short-haired or pubescent, the longest 

 hairs never much more than as long as 

 width of third antennal segment 16. 



15. Femora yellow, sometimes a small blackish 



mark at apices of hind pair longiseta, Stein. 



Femora black angustifrons, Steiu. 



IG. All femora black, sometimes yellowish at 



apices 17. 



At least some portion of basal half of femora 



yi-llowish 20. 



17. Tarsi pale vellow ochroprocta, Spieser, 



Tarsi black 18. 



