132 THE CANADIAN ENTOMOLOGIST. 



The following characters are common to all the species described 

 below : Antennse reaching to between middle and tip of abdomen. 

 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 tegulte, and metathorax, 

 opaque and minutely roughened. Tegulae piceous. Wings as long or 

 slightly longer than the whole body ; median vein obsolete. 



Dylita bicolor, n. sp. 



Female. — Shining black, legs honey-yellow, antennae piceous beyond 

 joint 4. Length, 1.25 mm. 



Antenn:e 13-jointed, sockets at middle of face and as far from eyes 

 as each other ; flagellum becoming distinctly wider and heavier toward 

 the tip ; antennal joint 2 three-fourths the length of i, 3 equalling i in 

 length, 4 and 5 subequal in length to 2 ; apical joint becoming wider for 

 about two-thirds its length, then rapidly narrowing to a point ; four basal 

 joints same colour as legs. Oral region rufous, palpi honey-yellow. 

 Radial cell long, triangular, two and a half times as long as wide, 

 terminal abscissa of radius broadly rounded, appendix below short, 

 strongly bent, knobbed at tip. Fort Collins; June. 



Dylita rtcficeps, n. sp. 



Female. — Shining black, head and antennse beyond joint 4, dark 

 rufous; legs honey-yellow. Length, 1.25 mm. 



Antennae 13-jointed, sockets above middle of face^ nearer to eacli 

 other than to the eyes ; flagellum but little wider toward the tip ; joint 3 

 somewhat longer than i, 2 three-fourths the length of 3, 4 and 5 sub- 

 equalling 2 in length ; apical joint evenly narrowed to a point and much 

 longer than anteapical. Mandibles honey-yellow, piceous at tips and 

 bidentate. Palpi sordid white. Radial cell triangular, two and one-third 

 times as long as wide, terminal abscissa of radius strongly irregularly 

 bent, appendix below long, angularly bent at extremity. Fort Collins; 

 June. 



Differs from bicolor in size, colour of head, antennae, and venation, 



Dylita affinis, n. sp. 



Female. — Length, 1.25 mm. Closely related to D. riificeps, from 

 which it differs as follows: Head of same widch, but shorter, of a very pale 

 bright rufous, with the space between the ocelli dark. Joint 4 of antenn* 

 nearly as long as 3, and slightly longer than 2 ; sockets above middle of 



