420 NEW YORK STATE MUSEUM 



c Abdomen yellowish, length 3 mm ; female 



p h o t o p h i 1 a n. sp., C. 45 

 aaaa 20 or more antenna! segments 



b Abdomen yellowish orange, length 3 mm ; 24 antennal segments, the 

 5th with a stem ^ the length of the basal enlargement, which 

 latter has a length 3 times its diameter ; the 4th palpal segment ^ 



longer than the 3d canadensis n. sp., C. 952 



bb Abdomen light reddish brown, length 3 mm; 25 antennal segments, 

 the 5th with a stem % the length of the basal enlargement, which 

 latter has a length 2]/^ times its diameter; 3d and 4th palpal 



segments nearly equal m o n t a n a n. sp., C. 953 



bbb Abdomen pale yellowish, length 2 mm; 26 antennal segments, the 

 5th with a stem ys the length of the basal enlargement; the 4t]i 



palpal segment J^ longer than the 3d 



m u 1 1 i a r t i c u 1 a t a n. sp., C. 831 



HOLONEURUS Kieff. 

 This genus may be separated from Porricondyla and Dirhiza 

 by the fifth vein being simple [pi. 39, fig. 3] and the four palpal seg- 

 ments distinguish it from Colomyia Kiefif. 



Key to species 



a 12 antennal segments, the stem of the 5th as long as the basal en- 

 largement 



b Abdomen yellowish, length i . 25 mm ; female 



(Porricondyla) a 1 1 i f i 1 u s Felt, C. 39S 

 aa 16 antennal segments, the Sth with a stem twice the length of the basal 

 enlargement 



b Abdomen yellowish brown, length 2 mm ; male 



c 1 o n g a t n s n. sp., C. 954 

 aaa 25 antennal segments, the 5th with a stem 34 longer tlian the basal 

 enlargement 



h Abdomen dull yellowish, length 3 mm ; male 



m u 1 1 i n o d u s n. sp., C. 528 



ASYNAPTA H. Lw. 



This genus may be recognized by the four long, simple 

 veins, the fifth being simple, and by the cross vein being parallel 

 (ir nearly so with costa [pi. 39, fig. 6|. 



Key to species 



a 16 aiitcnnal segments, the 5th with a stem 3^ longer than the basal en- 

 largement 

 b Abdomen yellowish brown, length 2 mm, the basal enlargement of 

 the 5th antennal segment with a length 3 times its diameter ; the 



terminal clasp segment broadly triangular 



( \V i n n e r t z i a) f u r c a t a Felt, C. 336 



