FAMILY METOPIID.E THE FLESH FLIES 407 



15. Third vein usually bristled half way to the crossvein or the arista 



thickened on not more than the basal half 16 



Third vein with only one to three small basal setulae, the arista thick- 

 ened on almost its whole length; third antennal segment five times 

 as long as second 15a 



15a. Vibrissae situated level with the anterior oral margin Ouelletia, n. g. 



Vibrissa situated almost the length of the second antennal segment 

 above the oral margin Eusenotainia Townsend 



16. Three pairs of almost equally strong marginal scutellars. 



Gymnoprosopa Townsend 

 Apical pair of scutellars weak or absent Eumacronychia Townsend 



17. A row of proclinate hairs on the parafrontals close to the frontals (21, 



22) Pachyophthalmus Brauer & Bergenstamm 



No such row of hairs, the parafrontals sometimes haired over most of 

 the surface or bearing one or more pairs of orbitals 18 



18. Costal spine very long and strong; two pairs of strong scutellars (24, 



29) Camptopyga Aldrich 



Costal spine short 19 



19. Parafacial hairs conspicuous, moderately long 20 



Parafacial hairs inconspicuous, very short 22 



20. Second abdominal segment with erect median marginals 21 



Second abdominal segment without median marginals. 



Wohlfahrtia Brauer & Bergenstamm 



21. Frontals not descending below the base of the antennae. .Amobia Desvoidy 

 Frontals descending below the base of the antennae and divergent below 



( 10 ) Brachicoma Rondani 



22. Three pairs of almost equally strong scutellars (17, 27). 



Senotainia Macquart 

 Apical scutellars very much v/eaker than the other two pairs. 



Eumacronychia Townsend 



23. Fifth vein bare 24 



Fifth vein bristled (6, 8) Johnsonia Coquillett 



24. Lower lobe of the squamae haired above at least on basal half 25 



Lower lobe of the squamae bare or pubescent above 29 



25. Propleura pilose 26 



Propleura bare Adiscochaeta Enderlein 



26. First vein setose posteriorly before the humeral crossvein. 



*Paralucilia Brauer & Bergenstamm 

 First vein not setose posteriorly 27 



27. Abdomen metallic blue or green 28 



Abdomen black in ground color, tessellate Squamatoides Curran 



28. One sublatei-al bristle Cynomya Desvoidy 



Two or three sublateral bristles fCalliphora Desvoidy 



* Chrysomya desvoidy i belongs hece. 



t Stcringomyia Pokorny is a synonym and Onesia Desvoidy is very doubtfully distinct. 

 If the two genera are united Onesia will have priority. 



