391/ NEW YORK STATE MUSEUM 



basal clasp segment stout. Harpes inconspicuous, broadly 

 dilated. T^^e, under woodi Undw. 



Corethra. Petiole of anterior fork cell of female wing about 

 one third the length of cell. Posterior cross vein its own length 

 or more from mid cross vein. Wing scales linear. Terminal 

 clasp segment of male genitalia long, slender, with, small apical 

 spine; basal segment simple. Harpes and harpagones retracted. 

 Larva predaceous, with small air tube and air reservoirs in the 

 thoracic and seventh abdominal segment. Species, karner- 

 e n s i s Felt, lintneri Felt, cinctipes Coq. 



Corethrella. This genus is similar to Sayomyia and Co'rethra, 

 but differs from both, in having the antennae fully covered with 

 hairs and the apical joint shorter than the intermediate ones. The 

 larv^a is said to resemble that of Corethra much more closely than 

 that of Sayomia. Species, b r a k e 1 e y i Coq. 



ERRATA 

 P. 339, line 16, for "Aedomyniae " read ''Aedeomyinae." 



