May, '09] FXTOMOLOGTCAL NEWS. 225 



First and second and fifth to seventh segments concolorous with body ; 

 third yellow ; fourth brownish yellow. Bifurcate sense cone near tip of 

 fourth segment on ventral side is especially noticeable. 



Prothorax 1.25 times as long and 1.3 times as wide as head. Two 

 prominent spines at each posterior angle ; two much shorter, curved, 

 anteriorly directed ones near each anterior angle ; and several other 

 short, curved ones along the sides. Mesothorax with irregular transverse 

 striations. Metathorax with sigmoid longitudinal markings which branch 

 and anastomose. Pterothorax is not distinctly lighter in color than the 

 rest of the body. Fore-wings reaching about to tip of abdomen ; brown 

 like the body, except a broad area at the base which is white, forming in 

 the uncleared insect a conspicuous transverse white band ; third quarter 

 of wing often slightly paler than second and fourth quarters ; there is no 

 light fleck near the tip of the wing. Costal margin set with about thirty 

 rather stout spines which increase in length toward the tip ; fore vein 

 with eight to ten weak spines, of which five or six are on the basal two- 

 fifths, the remaining three or four widely separated ; hind vein with seven 

 to nine spines on distal two-thirds of wing, slightly farther apart near tip 

 of wing. Surface of wings covered with minute spines arranged in about 

 twenty-one rows. Legs concolorous with body, except tarsi and distal 

 portions of all tibiae, and sometimes proximal end of femora yellow ; a 

 row of short stout spines on, inner side of hind tibiae, other spines irregu- 

 larly placed. 



Abdomen with long spines on last two segments ; shorter spines along 

 the sides ; spines on ventral side weak and arranged roughly in a trans- 

 verse row on each segment ; those on dorsal side inconspicuous and 

 irregularly arranged. Tenth segment split above for at least part of its 

 length, sometimes wholly. 



Male. Length of body .87 mm. ; width of prothorax .17 mm. ; width 

 of mesothorax .23 mm.; width of abdomen .17 mm. Length of antennal 

 segments 15 ,/ 30 ^ 38 fJ >, 39 p., 33 ^ 46 /j., 21 //.. 



Wings are present, with pale area on third quarter distinct, but not as 

 conspicuous as on basal quarter. Legs with bases of femora and most of 

 tibiae yellow, fore femur lightest of the three. 



Abdomen bluntly conical. Oblong pale area on ventral side of each of 

 abdominal segments three to seven. 



Described from numerous females and four males taken on 

 upper and under sides of leaves of tall millet grass, Milinm 

 effusum, August 6 to 13, 1908. The italicized characters dis- 

 tinguish this species from B. dispar Haliday. I have been 

 compelled to disregard Haliday's inclusion of rudimentary 

 wings in the males as a generic character. His win.uU'.-s 

 males, moreover, may belong to definite seasons only, as seems 

 often to be the case with other species. 



