404 THE CANADIAN ENTOMOLOGIST 



moderately stout and extending nearly to the base of the next en- 

 largement. Palpi: the first segment slender, irregular, second 

 narrowly oval, with a length about twice its diameter, the third a 

 little longer and more slender than the second, the fourth one-half 

 longer than the third, more slender. Mesonotum reddish brown. 

 Scutellum and postsculellum yellowish. Abdomen rather thickly 

 haired, brownish yellow, the genitalia darker. Wings hyaline, 

 subcosta uniting with the margin near the basal third, and with the 

 inclosed cell clouded with a chitinous thickening, the third vein 

 nearly straight, joining the margin at the apex of the wing, the 

 fifth indistinct distally, uniting with the posterior margin at the 

 distal third, its branch at the basal third; halteres pale yellowish. 

 Legs mostly dark straw; claws long, slender, unidentate, the 

 puhilii nearly as long as the claws. Genitalia: basal clasp segment 

 long, slender, with a rather distinct internal, quadrate lobe basally; 

 terminal clasp segment somewhat swollen at the base, irregular 

 and tapering lo an obtuse, spurred apex; dorsal plate short, broad, 

 broadly and triangularly emarginate, the lobes narrowly rounded 

 and sparsely setose; ventral plate moderately long, broad, deeply 

 and narrowH' and triangularly emarginate, the lobes rather broad 

 and tapering slightly to a narrowly rounded, setose apex; style 

 long, stout, narrowly rounded apically. Type Cecid. 168G. 



Extivium. — Length L5 mm., moderately stout, whitish trans- 

 parent, the antennal cases with indistinct basal processes internally 

 and extending to the second thoracic segment, the wing cases to 

 the fourth abdominal segment, and the leg cases to the fifth ab- 

 dominal segment, respectively; the dorsum of the abdominal seg- 

 ment rather thickly and uniformly covered with minute, chitinous 

 forks; posterior extremity broadly rounded, somewhat lobed and 

 incised apically. 



Female. — Length 2 mm. Antenna* extending to the third 

 abdominal segment, sparsely haired, dark reddish brown; 14 sessile 

 segments, the fifth with a length one-half greater than its diameter, 

 subcylindric, with a rather thick basal whorl of stout setae, a scatter- 

 ing subapical whorl of more slender setae and at the basal third and 

 apically, low% unusually broad circumfili, the distal filum with the 

 loops somewhat elevated and reaching nearly to the base of the 

 following segment; terminal segment somewhat produced and 



