1939] 
Notes on Hippoboscidae 
75 
ter. Legs bright reddish-brown. Parameres of male 
genitalia slender, rod-like, ending in a blunt point. 
Wing 7 to 9 mm. long H. rufipes 
Frons very slightly or not narrower at occiput than at 
fronto-clypeus. Scutellum narrower and less rec- 
tangular, with a median ivory-white spot; with 14 
to 18 soft and pale preapical bristles, placed in two 
irregular, more or less connected groups. Mesonotum 
very bristly, also in the center. Legs rufous-yellow. 
Parameres of male genitalia thick, beam-like, trun- 
cate and slightly emarginate at tip. Wing 6.5 to 8 
mm. long H. hirsuta 
8. Two or three pairs of vertical bristles. Fronto-clypeus 
shorter than its distance from the occipital margin. 
Postvertex shorter than mediovertex, the latter much 
narrowed medially by the broad inner orbits. Ante- 
rior basal cross-vein (M 3 ) very oblique and nearly its 
own length from anterior cross-vein (r-m). Scutel- 
lum semi-elliptical, the hind margin distinctly convex 
and slightly projecting medially; in the female with 
3 to 8 discal bristles (usually 4 to 6), placed in two 
linear groups; in the male with 11 to 22 preapical 
bristles (usually 12 to 15), placed in two irregular 
groups. No median tergal plates in the female; the 
male with one large median plate behind the basal 
tergal sclerite and a pair of small median tergal plates 
posteriorly. No pad-like pulvilli; bristle-like em- 
podium bare, except at base. Parameres of male 
genitalia rod-like, but curved upward, the apex slight- 
ly swollen and knob-like. Wing 9 to 10 mm. long 
H. camelina 
One pair of vertical bristles. Fronto-clypeus nearly as 
long as its distance from occipital margin. Post- 
vertex as long as or longer than mediovertex, the lat- 
ter moderately narrowed by the inner orbits. Ante- 
rior basal cross-vein short, almost vertical upon the 
fourth longitudinal and more than twice its length 
from anterior cross-vein. Scutellum nearly rectang- 
ular, the hind margin more straightly truncate; in 
both sexes with preapical bristles placed in two widely 
separated lateral groups, more numerous in the male 
