THE MVCETOPHII.ID.T; OF NORTH AMERICA. 265 



vein ends in the costa opposite the base of the radial sector; 

 subcostal crossvein proximad of the middle of the subcosta; 

 R=-}-3 oblique ; anal vein strong but does not quite reach the wing 

 margin. This European species has been recorded from New 

 Jersey. 



26. Platynra divaricata Loew. 

 1869. divaricata, Loew. Berl. Ent. Zeitschr. XIII. 134, 

 ]\Iale. Length 3.2 mm. Luteous. Flagellum of the antenna 

 rather short, fuscous. Abdomen wholh^ yellow except for the 

 small terminal segment which is fuscous, hypopygium blackish. 

 Wings with yellowish tinge, apical third of wing cinerous 

 fuscous, extreme tip cinereous ; subcosta ends in the costa proxi- 

 mad of the base of the radial sector; subcostal crossvein slightly 

 proximad of middle of subcosta; 'R.--+'. nearly perpendicular to 

 Ri+o; cell ]\Ii wider than in P. subfcniiiiialis; coalesced part of 

 the media equal or slightly greater than the petiole ; anal vein 

 does not quite reach margin of the wing. Length of wing 3.2 

 mm. Fore metatarsus about .3 longer than its tibia. Recorded 

 from Georgia. Described from the type specimen in the 

 ]\Iuseum at Cambridge, ]\Iass. 



5. Subfamily Macroccriiicc. 

 Macroccrincv, \\'innertz. A'erh. zool-bot. Ges. ^^'ien. XIII. 67^. 



1863. 

 This subfamil}' dififers from the Ccroplatincc primarily in hav- 

 ing extremely long antennse, often much longer than the body. 

 There is but one living genus. 



Genus Macroccra ]Meigen. 

 ? Bnphrosyne ]\Ieigen, X^ouv. classif. des mouches. 16. 1800, 



Doubtful type. 

 Macroccra, Meigen, Illiger's IMag. II. 261. 1803; Klass. I. 1804. 

 Head broad, oval ; eyes oval, slightly emarginate ; the anterior 

 median ocellus smaller than the laterals ; palpi four jointed ; 

 antennre 2-(-i4 jointed, often much longer than the body. 

 Thorax highly arched ; abdomen depressed, w^ith seven visible 

 segments. Legs long and slender, the fore pair much shorter ; 

 tibial set?e wanting or very minute; spurs small. Wing (fig. 90) 



