154 NEW YORK STATE MUSEUM 



a c e r i s being named. Kieffer in 1896, holding that the genus as 

 characterized by Meigen comprised a group, designated C. m u n d a 

 Winn, as the type. An examination by the writer, of specimens in 

 Meigen's collection deposited in the Natural History Museum of 

 Paris, representing the four species originally assigned to this 

 genus, showed that the specimens are in such poor condition that 

 they can hardly be used to advantage in establishing the identity of 

 the generic type. The form designated by Kiefler as the type of 

 the genus, namely, C. m u n d a Winn., unfortunately has not 

 been characterized with sufficient fulness so that it can be sepa- 

 rated from allied forms. Under the conditions, we are compelled 

 for the present to treat Campylomyza Meign. as a supergenus, re- 

 ferring thereto forms which can not be readily assigned to some 

 of the more recent genera. Owing to the paucity of our reared 

 material in this group, we have been unable to make a critical 

 study of the generic characters, though the little data we have ob- 

 tained in this manner would seem to justify the existence of the 

 recently established genera. 



Key to genera 



a Wingless, or if wings are present, the fifth vein simple 



b Claws with long, parallel teeth, the pulvilli very short 



Strobliella Kieff. 



bb Claws denticulate, the puvilli absent Wasmanniella Kieff. 



aa Winged, fifth vein forked 



b Third vein usually well separated from costa and frequently uniting 

 therewith at or beyond the apex 

 c Flagellate antennal segments globose, stemmed in both sexes and 

 ornamented only with whorls of long hairs 

 d Fourth vein present 

 e Palpi tri- or quadriarticulate 

 / Wings normal, slender, antennal segments, male 14, female 11. 



Joannisia Kieff. 

 // Wings broad, not twice as long as wide, antennal segments, 



female 12 Projoannisia Kieff. 



ee Palpi Particulate, the male with 14 and the female with 13 

 antennal segments, the claws strongly bent, dilated subapi- 



cally Peromyia Kieff. 



dd Fourth vein wanting 



e Antennal segments stemmed Trichopteromyia Will. 



ee Antennal segments sessile, the second enlarged, globose; palpi 



triarticulate Ceratomyia Felt 



cc Flagellate antennal segments cylindric, subsessile ; male with 12, 

 female with 9 antennal segments ; fourth vein rudimentary, obso- 

 lete distally Mycophila Felt 



