Ghilosia. 129 



descending; third antennal joint black or blackish 



brown; venter a little pruinose 21. gigantea. 



— Eye-hairs blackish; epistoma more protruding and 

 descending; third antennal joint brownish red or red; 

 venter shining 23. 



23. Wings rather long ; hairs on thorax and abdomen 

 long and the long hairs on posterior part of thorax 

 and scutellum three or four times longer than the 



short; antennæ small; legs nearly quite black 25. carhonaria. 



— Wings rather short; hairs on thorax and abdomen 

 shorter and the long hairs on posterior part of thorax 

 and scutellum only twice as long as the short; antennæ 



a little larger; legs with the knees more pale 26. cynocephala. 



24. Anterior or all tarsi more or less pale 25. 



— Only middle tarsi more or less pale 29. 



25. Largish species; basal joints of anterior tarsi pale .... 26. 



— Small species; basal joint of anterior or front tarsi 

 darkened 28. 



26. Epistoma considerably hollowed below the antennæ; 



eyes bare on the low^ermost part 27. 



— Epistoma flat, almost not hollowed; eyes haired all 



over 28. veluHna. 



27. Hind tibiæ with a more or less faint or almost no 

 blackish ring, front and hind tarsi more or less 

 darkened above; antennæ brownish red; hairs on 



eyes and body not long 19. fraterna. 



— Hind tibiæ generally with a distinct blackish ring, 

 tarsi rather yellow but hind metatarsus dark above; 



antennæ orange ; hairs on eyes and body long .... 20. Bergenstammi. 



28. Antennal arista not short, distmctly pubescent; hind 

 tibiæ almost quite black and hind tarsi black; scu- 



tellar bristles numerous 29. mutabilis. 



— Antennal arista short, practically bare; all tibiæ yel- 

 low with a black ring, all tarsi yellow on the middle; 



scutellar brislles weak, not numerous 30. ruralis. 



29. Eye-hairs pale, not short; venter greyish pruinose .. 22. proxima. 



— Eye-hairs blackish, more or less short; venter shining 27, vernalis. 



Fem al es, 



1 . Eyes bare 2. 



— Eyes hairy 13. 



2. Abdomen with grey spots 1. maculata. 



— Abdomen unspotted 3. 



3. Legs black or with only the middle joints of front 



tarsi more or less pale 4. 



— Legs more or less pale 8, 



4. Legs quite black 5, 



— Legs with middle joints of front tarsi more or less 



pale 24, alhitarsis. 



9 



