antiiomyid.t:. 135 



fl. Arista plumose. .......... 10 



Arista bare. ........... 11 



10. Sixth vein of the wings prolontjed to the posterior margin of tlie 



wing. Hydropiioria Desvoidy. 



Sixth vein not prolonged Myd.ea Desvoidy. 



11. Sixth vein of the wings very short, with the axillary vein curved 



towards it at the tip. ......... 12 



Sixth vein elongated 13 



12. Abdomen depressed, nearly bare; head hemispherical, composed al- 



most wholly of the eyes; antennfe shorter than the face, the third 

 joint often elongated ; legs moderately long, the middle pair in the 

 male often with peculiar structures; black or gray species, some of 

 them common in dwelling houses. . . IIomalomyia Bouche. 

 Abdomen narrow, subcylindrical ; males velvety black with spotted 

 abdomen. Azelia Desvoidy. 



lo. Dark metallic black or blue-black species; hind tibia? often arcuate; 



abdomen oval Ophvra Desvoidy. 



Species otherwise colored than shining black or metallic blue ; hind 

 tibia? not arcuate {Brachijophijra Giglio-Tos). Anthomyia Meigen. 



14. Arista plumose; moderate sized to small, elongate species, of gray or 



blackish color; eyes bare; abdomen usually with sub-anal appen- 

 dages in the male IIyi.emyia Desvoidy. 



Arista bare or slightly pubescent. ...... 1.5 



15. Eyes liairy ; black species with the abdomen sometimes reddish yellow. 



Lasiops Meigen. 

 Eyes bare (inclusive of Pei/oni'/ia and Plmrhla). Ciioutophila Rondani. 



IC. Palpi dilated spoon-shaped. ..... Lisp/ Latreille. C- 



Palpi slender, not dilated 17 



17. Arista plumose Catsicea Desvoidy. 



Arista pubes(;ent or l)are. ........ 18 



18. Tegula larger than the antitegula, botli of moderate size. 



Ci?NOSiA Meigen. ^^ 

 Tegula and antitegula of equal size, both small.* 



ScHtENoMYZA Haliday. 



* The genus Fncellia Desvoidy is relegated to the Anthomyidajby Becker. 

 The known American species (L./ucorum) lives along the seashore. It is 

 rather thicklj' bristly and the hind femora in the mak- have a conspicuous 

 tuft of short black bristles near their base. 



