Dolichopodidae. 67 



6. Front coxæ whitehaired, front tarsi considerably 



longer than tibiæ 2. Falleni. 



— Front coxæ black-haired, front tarsi not much longer 



than tibiæ 3. Meigenii. 



7. Middle tibiæ with an obscure pale ring; middle meta- 



tarsi with a bristle above 6. Stenhammari. 



— Middle tibiæ with no ring; middle metatarsi with- 



out bristle above 8. 



8. Anterior tibiæ not pale at the base of the tarsi; 



small ventral bristles on hind tibiæ distantly placed 4. melanopus. 



— Anterior tibiæ pale at the base of the tarsi; small 



ventral bristles on the hind tibiæ densely placed . . 9. picipes. 



9. Middle femora with two preapical bristles 7. campestris. 



— Middle femora with one preapical bristle 10. 



10. Epistoma not specially broad; arista near the apex 

 of the third joint; hind tibiæ black, with the small 



ventral bristles distantly placed 5. planitarsis. 



— Epistoma broader; arista more dorsally placed; hind 

 tibiæ generally more or less yellowish on the basal 

 half, with the small ventral bristles somewhat densely 



placed 8. lepidus. 



11. Antennæ quite black, hind metatarsi with more than 



one bristle above 12. 



— Antennæ yellow beneath the basal joint; hind meta- 

 tarsi with only one bristle above 15. clavipes. 



12. Wings infuscated at the anterior margin and at the 

 posterior cross-vein; anterior tibiæ yellow, hind tibiæ 

 dark in the apical part, middle tarsi mainly yellow; 



brightly shining species 11. remipes. 



— Wings not or less infuscated at the anterior margin 

 and not at the posterior cross-vein ; tibiæ all black 

 or all yellow, middle tarsi mainly black; less bright 

 species 13. 



13. Hind tibiæ with long bristles on the ventral side. . \'2,. tanythrix. 



— Hind tibiæ with only short bristles on the ventral 



side 14. 



14. Tibiæ black or somewhat piceous 13. atripes. 



— Tibiæ yellowish 14. vitripennis. 



15. Lower postocular bristles pale 16. 



— Lower postocular bristles black 40. 



16. Basal joint of middle tarsi with a bristle above 17. 



— Basal joint of middle tarsi without any bristle above. . . 22. 



17. Hind femora with more than one preapical bristle 16. claviger. 



— Hind femora with only one preapical bristle 18. 



18. Antennæ nearly all blackish or brownish, only the 



basal joints more or less yellowish beneath 19. 



— Antennæ yellowish, more or less dark above and 



at the apex 20. 



19. Front tarsi yellow with only last joint black; front 



coxæ grey at the base 18. confusus. 



5* 



