I 



THE CANADIAN ENTOMOLOGIST. 133 



face, distance between tliem equalling distance to eyes. Appendix below 

 radial cell long and straight. Fort Collins ; September. 

 Easily separated from ruficeps by the above characters. 



Dylita coloradensis, n. sp. 



Male. — Black ; head, pro thorax, and all pleurge, pale rufous ; antennae 

 and legs honey-yellow. Length, 1.5 mm. 



Antenna- 14-jointed, sockets above middle of face, as near eyes as 

 each other; fiagellum not enlarging toward the tip; joint 2 three-fourths 

 of I, 1-3-4 and 5 subequal ; apical joint conical and not longer than 

 anteapical. Metanotum with two distinct carin?e which converge 

 slightly anteriorly. Radial cell triangular, little more than twice as 

 long as thick, terminal abscissa of the radius somewhat curved, 

 appendix below long, straight, gradually enlarged toward the extremity. 

 Fort Collins ; June. 



Readily distinguished from the above species by coloration. 



Dylita siniilis, n. sp. 



Male. — Length, 1.5 mm. Very similar to D. coloradensis, from 

 which it differs as follows : Space between ocelli dark. Antennae 

 becoming piceous beyond joint 4. Radial cell longer and more pointed, 

 two and one-half times as long as wide, terminal abscissa of the radius 

 nearly straight, appendix below curved. Fort Collins ; September. 



Alloxysia, Forster, 



In this genus (or subgenus) the radius reaches the anterior margin 

 of the wing, but the radial cell is open anteriorly. The following char- 

 acters are common to all the species described below : Antennae reaching 

 to between middle and tip of abdomen, sockets at middle of face, as near 

 eyes as each other. Pubescence very sparse, except on metathorax and 

 base of abdomen, where it is short and thick, and on scutellum, where it is 

 long and thin. Prothorax below, a triangular sclerite below tegular, and 

 metathorax, opaque and minutely roughened. Teguls piceous. Wings 

 as long or slightly longer than the whole body ; median vein obsolete. 



Alloxysia robusta, n. sp. 



Female — Shining black, antenna; at base and legs honey-yellow. 

 Length, i mm. 



Antennae 13-jointed, piceous beyond joint 4; flagellum strongly 

 enlarging toward tip ; joints i, 2 and 3 subequal in length, 4 and 5 some- 

 what shorter than 3 ; apical joint conical, longer than anteapical. Oral 



