34 Journal New York Entomological Society. [Vol. xix. 



equal to that of the two following relatively short, quadrate segments, the 

 fourth and fifth subquadrate ; claws slender, very strongly curved, simple, the 

 pulvilli as long as the claws. Genitalia : basal clasp segment long, tapering 

 slightly ; terminal clasp segment rather stout, with a length three times its 

 diameter, tapering distally, one apparently deformed and with a second rudi- 

 mentary terminal clasp segment ; dorsal plate broad, broadly rounded apically ; 

 ventral plate indistinct ; style triangular, tapering to a narrowly rounded apex. 



Received from Ocotlan, Mexico, through Dr. O. A. Johannsen under date 

 of December 12, 191 0. 



Type Cecid 1388, N. Y. State Museum.' 



Allied to Micromyia Rond. on account of the greatly enlarged 

 second antennal segment, though easily separated therefrom by the 

 absence of the fourth vein. The latter character indicates a relation- 

 ship with TricJwpteromyia Will, from which it may be separated by 

 the greatly reduced antennae, with only six short, sessile segments. 

 North America. 



Genus MICROMYIA Rond. 1840, type M. lucorum Rond. 

 Third vein uniting with costa before the apex. Antennae very 

 short, 10 or 11 segments in the male, 8 in the female, the second 

 greatly enlarged, the flagellate segments sessile in both sexes. Palpi 

 quadriarticulate. Europe. 



Genus CAMPYLOMYZA Meig. 1818, type C. ftavipcs Meig. 

 Antennal segments not very short, the second not greatly enlarged,. 

 the male with 14, the female with 1 1-22 segments, the flagellate ones 

 ornamented with crenulate whorls or other structures more complex 

 than irregular whorls of simple hairs. Synonym: Nciirolyga Rond. 

 1846. Owing to the unsatisfactory characterization of the type spe- 

 cies, this genus is tentatively given supergeneric rank and the follow- 

 ing genera or subgenera separated therefrom. Europe, North America,. 

 Australia. 



Genus PRIONELLUS Kieff. 1894, type Prionota pini Kieff. 

 Distinguished from forms having the general characters of Cam- 

 pylomyca by the more or less distinct subapical collar on the flagel- 

 late antennal segments and the denticulate claws, the pulvilli being 

 well developed. Synonym: Prionota Kiefif. Europe. 



Genus APRIONUS Kieff. 1894, type Apriona bidcntata Kiefif. 

 Distinguished from the preceding genus by the simple claws and 

 the short or rudimentary pulvilli. Europe. 



