257 
before midlength of cell first M2; Cu? about one-half the length of the 
basal deflection of Cul. 
Basal abdominal tergite velvety black; segments three to seven more 
dilated and with the basal two-thirds of each segment shiny, glabrous, 
somewhat glaucous; hypopygium black; sternites deep reddish brown. 
Hab.—China. 
Holotype, male, How-lik Mountains, 1907 (Kershaw). 
Type in the Hawaiian Sugar Planters’ Experiment Station. 
GENUS PSELLIOPHORA OSTEN SACKEN. 
Pselliophora kershawi, sp. n. 
General coloration orange; wings yellow, the apex dark brown; wing-base 
variegated with paler brown; eighth sternite of male hypopygium not pro- 
jecting. 
Male. Length, 19 mm.; wing, 15.5 mm. 
Female. Length, 25 mm.; wing, 19 mm. 
Rostrum reddish; palpi reddish brown. Antennae orange, the terminal 
segments darker; all flabellations black; pectination of first flagellar seg- 
ment in the male stout, orange; antennae of female orange, the terminal 
three segments minute. Head orange. 
Thorax entirely orange, immaculate. Halteres orange, the knobs a little 
darker. Legs with the coxae and trochanters concolorous with the thorax; 
femora obscure orange, the posterior femora with the tips conspicuously 
infuseated; tibiae orange, the posterior tibiae with a broad but diffuse 
pale annulus at base; metatarsi brownish orange, the terminal segments 
brown. Wings yellow, the apex beyond the cord dark brown, this inelud- 
ing the distal half of the stigma; the yellow base is extensively suffused 
by paler brown, including a very broad, oblique crossband, broadest in 
cells R and M, narrower in cells Cu and first A; cell second A and the 
caudal margin of first A entirely dark; the yellow ground-color appears as 
a broad, conspicuous band completely traversing the wing before the cord 
and a narrow longitudinal area in the bases of cells Cu and first A, on 
either side of vein first A, continued across cell first A to the margin near 
the tip of vein second A. In the male the brown basal pattern is some- 
what less intense, especially in cells R and M, and the base of cell second 
A is yellow. Venation: Cell M1 barely sessile; m-cu long. 
Abdomen orange; caudal margin of ninth tergite of male and the ovi- 
positor of the female black. Male hypopygium with the ninth tergite hay- 
ing an oval median notch, the lateral lobes obliquely truncated, with the 
caudal face tumid, heavily blackened, the surface microscopically rough- 
ened. Ninth sternite with two flattened mesal plates, each terminating in 
an acute spine directed dorsad, the caudal margin of the plates lying side 
by side, the ventral mesal angle produced caudad into a chitinized rod 
