313 



nected with it by a cross vein and the media is petiolate. Empodia 

 distinct. 



Type of genus, Bnforcipomyia hirtipennis, n. sp. 



Key to Species 



1. Basal joint of hind tarsus not twice as long as second (22 : 15) .... 



Mrtipennis. 



— Basal joint of hind tarsus at least twice as long as second 2 



2. The short joints of antennal flagellmn longer than broad, distinctly 



narrowed at bases, the segmentation very distinct ; basal joint of 

 hind tarsus twice as long as second (40 : 20) longitarsis. 



— The short joints of antennal flagellmn broader than long, closely 



fused, the segmentation indistinct; basal joint of hind tarsus about 

 2.5 times as long as second (37 : 15) fusicornis. 



EUFORCIPOMYIA HIRTIPENNIS, H. Sp. 



Female. — Black, shining; abdomen more brownish, subopaque. 

 Antennae and mouth parts brownish. Legs yellow. Wings slightly 

 grayish, covered with brown hairs. Halteres yellow. Hairs through- 

 out on body and legs yellow. 



Eyes slightly separated ; antenna longer than head and thorax com- 

 bined, the divisions between joints distinct throughout, basal 9 flagel- 

 lar joints subequal in length, distinctly but not greatly longer than 

 broad, hairs of moderate length, sensory organs longer than length of 

 joints, slightly curv^ed, apical 5 joints elongated, stout, their combined 

 lengths less than that of basal 9, apex of last joint produced in the 

 form of a short thorn. Thorax with long and rather sparse slender 

 hairs, those on margin of scutellum very long. Abdomen with sparse 

 short hairs. Legs of moderate strength; hind tibia and hind tarsus 

 subequal in length; basal joint of hind tarsi about 1.5 as long as second 

 (22: 15); third joint slightly shorter than fourth, fourth and fifth 

 subequal ; claws small, subequal, simple ; empodium as long as claws, 

 fringed ; surfaces of femora and tibiae with numerous long hairs. 

 Third vein ending a little beyond middle of wing, first ending one 

 third from apex of third, connected with the latter by a cross vein at 

 its middle ; media with very short petiole, base of posterior branch in- 

 distinct; surface of wing with numerous microscopic upright hairs in 

 addition to the long subdepressed hairs. 



Length, .5 mm. 



Type locality, Urbana, 111., June 30, 191 5, taken by the writer on 

 the windows of the basement of the Natural History Building. 



Nothing is known of the early stages or of the habits of the imago. 



