206 THE CANADIAN ENTOMOLOGIST. 



its origin; Sc2 at tip of Sci; Rs long, nearly three times as long as 

 the basal deflection of R4+5; basal deflection of Cu.i at fork of M, 



Abdominal tergum brown, anterior margins of the basal seg- 

 ments somewhat more yellowish ; sternum pale whitish-yellow. 

 Hypopygium (see figs. 5-7; pi. IV.) : 8th tergite short, consisting only 

 of a narrow ring, almost straight on its cephalic margin, concave 

 on the caudal margin; 9th tergite convex anteriorly, concave on 

 caudal margin. Pleural pieces very short, cylindrical, not more 

 than twice as long as wide, bearing two apical appendages. The 

 dorsal appendage is a short, slender, strongly curved hook, sharp 

 pointed and more chitinized at its tip; it is directed entad, ccphalad 

 and dorsad. The ventral lobes are long, fleshy, between two and 

 three times as long as the pleura and much thicker; at their base, 

 on the inner side, is a short, fleshy tooth, more chitinized at its tip, 

 directed cephalad and dorsad and meeting its mate of the opposite 

 side on the median line; near the tip, on the outer or caudal face, 

 are two, long, slender, subequal bristles, directed caudad. The 

 ventral side of the pleura is produced into a lobe, enlarged apically 

 and directed entad and slightly caudad. The guard of the penis 

 is short, extending slightly beyond the most caudad-projecting 

 portion of the pleura; it is swollen at the base, less so in the middle 

 of its length, its tip small, chitinized, bifid at apex, the tip directed 

 slightly ventrad. The second gonapophyses are very short, and, 

 viewed from above, barely project beyond the fleshy lobe lieing 

 between them. 



Vial No. 8.— Tokyo, Japan; April 25, 1912. Ic^. 



Vial No. 49.— Tokyo, Japan; August, 1912. 1 cf • 



Holotype, d'.— Vial No. 8. 



Paratype, d" . — Vial No. 49. 



Types in the author's collection. 



G. avocctta, compared with the four Javan species described by 

 de Meijere, agrees most closely with G. montana, which, however, 

 has the wing-pattern much less distinct. From the North Ameri- 

 can G. rostrata Say, it differs conspicuously in its unicolorous tibice. 



Genus Rhipidia Meigen. 

 Rhipidia pulchra septeiitnonis, subsp. n. 



This subspecies diflers from typical pulchra Meij.* (Java) in 



*Neue unci bekannte sudasiatische Diiitcrcn ; p. 92, fig. 7. Bijdragcn tot 

 de Dierkundc, vol. 17, 1904. 



