68 Tachinidae. 



apex of wing, sometimes ratlier near it; cubital 

 cell not widening apically; first posterior cell 

 nearly always open and never long-petiolate, 

 but at most quite short-petiolate 11. 



— First posterior cell ending at or quite near apex of 

 wing, open, closed or petiolate; cubital cell often 



more or less widening apically 70. 



11. Vibrissæ not ascending, or at most towards tlie 



middle 12. 



— Vibrissæ more or less ascending, at least to 



middle or almost 54. 



12. The vibrissal angle with the large vibrissa more 

 or less high above the lower margin of epistoma, 



and this latter not protruding below 13. 



— The vibrissal angle with the large vibrissa near 

 lower margin of epistoma, or if higher this margin 

 protruding forwards below 15. 



13. Third antennal joint broad, scarcely longer than 

 second; eyes and cheeks hairy; female with 



dilated front tarsi 117. Meriania. 



■ — Third antennal joint linear, considerably longer 

 than second; eyes bare or very slightly hairy; 

 cheeks bare; female with front tarsi not dilated 14. 



14. Abdomen with discai bristles 57. Meigenia. 



— Abdomen without discai bristles 58. Viviania. 



15. Eyes bare or slightly pubescent 16. 



■ — Eyes hairy 31. 



16. Arista densely and short-plumose in basal half; 



propleura hairy {Sarcophaga-\ike species) 118. Helicohosca. 



— Arista not plumose, or distantly and long-plu- 

 mose in nearly whole length {Thelaira) ; propleura 



bare 17. 



17. Cheeks with hairs or bristles 18. 



— Cheeks bare 20. 



18. Third antennal joint not much longer than 



second; cheeks with a row of bristles 19. 



— Third antennal joint considerably longer than 



second; cheeks with hairs 123. Pseudopachystylum . 



19. Second joint of arista short; second antennal joint 



pale; cubital vein almost bare ; abdomen ovate.. 73. Gaedia. 



— Second joint of arista a little elongated; second 

 antennal joint black; cubital vein with bristles 



in nearly whole length; abdomen elongate .... 133. Petina. 



20. Antennal arista geniculate, thickened to apex, 



second joint long; vibrissæ somewhat ascending. . 103. Germaria. 



— Antennal arista not geniculate and only thickened 



at base, second joint short 21. 



21. Discai angle with a veinlet or fold 22. 



