dd. Vibrissal angle situated nearly on a level of the oral margin.
e. Species wholly blackish, bluish, or greenish metallic in color.
f. First section of R4+5 with at most three or four small bristles at the immediate base.
g. The bend of R4+5 a gentle curve; costal spine present; cell R5 closed, ending before the apex of the wing. S. cuprina. Java. Synamphoneura Bigot
gg. Bend of R4+5 angular; or the insect differs in other characters; dorsal surface of the squamula thoracalis hairy (except in Melinda); arista plumose only on the basal two-thirds (except usually in Calliphora and Eucalliphora).
h. Arista plumose only on the basal two-thirds.
i. Base of the antennæ ventrad of the middle of the eye; eyes of the male nearly contiguous; genæ hairy; second abdominal segment with median marginal macrochætæ; two, rarely three, postsutural intraalar macrochætæ.
j. Squamula thoracalis dorsally with long black hairs; male hypopygium two-segmented, large, projecting; claws and pulvilli of the male elongate; three strong sternopleural macrochætæ; genæ at least half the width of the eye; buccæ (cheeks) half the height of the eyes; oviviparous. O. sepulcralis. Europe. Onesia R. D.
jj. Dorsal surface of the squamula thoracalis bare; male hypopygium small, scarcely projecting below; claws and pulvilli not elongate; two stout sternopleural macrochætæ, sometimes with a delicate one below the anterior; genæ nearly linear in the male; buccæ about a third of the eye height; oviparous. M. cærulea. Europe. Melinda. R. D.
ii. Base of the antennæ dorsad of the middle of the eye; eyes of both sexes distinctly separated; dorsal surface of the squamula thoracalis with black hairs; two postsutural intraalar macrochætæ.