50 THE CANADIAN ENTOMOLOGIST. 



extending nearly across, submarginal cell, the inner one wholly in mar- 

 ginal cell j marginal cell more or less pale, at least on costal portion ; 

 submarginal cell with a longitudinally elongate, slightly cresentic pale area 

 in its apical portion ; an elliptical, longitudinal white spot in first (anterior) 

 basal cell at its distal two-thirds just the width of cell ; a round white 

 spot nearly in middle of widened distal portion of discal cell, a little 

 approximated to anterior border of cell ; a transversely oblique, somewhat 

 elongated white spot in apical cell on its distal two-thirds, but little sepa- 

 rated at its posterior end from a similar spot in distal portion of second 

 posterior cell, which, however, reaches hind margin, where it slightly 

 widens, these two spots having the same oblique direction pointing out- 

 ward toward the hind margin of the wing ; a large inverted V-shaped 

 white spot nearly in middle of second posterior cell, a little nearer 

 base, slightly bulged on its inner (toward base of wing) margin, and 

 its prongs reaching hind border of wing ; two smaller, quite widely 

 separated white spots bordering on hind margin in distal portion of 

 third posterior cell, the outer one touching fifth longitudinal vein near 

 its extremity ; a large, white spot a little before middle of third pos 

 terior cell, extending from anterior border of cell back through 

 fourth posterior cell to hind margin of wing ; a small, rather tri- 

 angular white spot in extreme basal portion of third posterior cell and 

 nearly behind the elongate marking above referred to as bordering on the 

 pale basal portion of the wing ; anal angle broadly white, extending into 

 the anal cell, and joining the pale basal portion ; wing veins at base, in- 

 cluding the costal vein where it borders the white spots, pale yellowish ; 

 halteres pale yellowish. 



Head, including front, frontal bristles, face, antennas, cheeks, pro- 

 boscis, and palpi, pale yellowish, arista slightly darker apically and bare ; 

 occiput darker on upper central portion ; eyes blackish (are probably 

 green in life) ; second and third antennal joints of nearly equal length, 

 palpi enlarged apically and tips reaching to tip of proboscis ; front nar- 

 rowed anteriorly, on vertex more than one-half width of head ; front set 

 on ocellar area ; anterior portion of orbital margins and vertex with short 

 pale yellowish bristles, including a row on each side descending obliquely 

 inward from vertical angles, meeting in centre and forming a V, also with 

 a pair of long, nearly erect bristles on vertical margin, and three shorter, 

 sub-appressed, inwardly directed pairs on anterior orbital margins. Thorax 

 blackish, dorsum and pleurae, including scutellum, thickly set with short, 



