1945] Notes on Hippoboscidce 91 
stiff, black bristles as follows: on each side, two on the humeral 
callosity, three or four at the hind corner of the notopleuron, 
one prealar, one postalar, one prescutellar, one scutellar (in the 
side corner), and six on the metepimeron; hind margin of scutel- 
lum densely fringed on the sides, weakly in the middle. Legs 
long and stout; femora much swollen, but without distinctive 
features; fourth tarsal segment of fore legs not produced, nor- 
mal; hind tarsal segments broader than usual, densely covered 
beneath with stiff, black bristles. Wing short and broad; micro- 
trichia covering the membrane except for the following areas: 
most of axillary cell (2d An), most of first basal cell (R), en- 
tire second basal cell (M), and basal half of the combined dis- 
cal and second posterior cells (M 2 ); first basal cell (R) long, 
narrow, parallel-sided; second basal cell (M) short, at most 
one-third of the length of the first, slightly widened apically and 
closed by a hyaline, unsclerotized, straight, vertical anterior 
basal cross-vein (M 3 ), the upper outer angle being nearly 
square; subcosta (Sc) usually complete, ending in costa; apical 
portion of costa (beyond tip of first longitudinal vein) moder- 
ately swollen, distinctly thicker than basal portion; longitudinal 
veins all crowded near anterior margin; costa densely setulose, 
all other veins bare. Abdomen: one very large sclerotized basal 
tergite, with straight hind margin, covered with many evenly 
distributed short setae; remainder of dorsum mostly soft and 
membranous, without sclerotized plates, uniformly covered 
with short setae and some larger and heavier ones at extreme 
sides; one large preanal, sclerotized tergite, sparsely covered 
with short setae and bearing on each side a group of ten to 
twelve very strong, spine-like bristles, three to five of which are 
much longer than the others and placed near the hind margin; 
venter entirely soft and membranous, fairly uniformly covered 
with short setae, posteriorly with much longer ones; before the 
genital opening a pair of small prominent lobes, sclerotized at 
the broadly rounded tips, which bear many long setae. 
Female . — Differs from the male in the following particulars. 
Frons relatively narrower, at its narrowest about one and two- 
thirds the width of an eye. Membrane of wing bare over about 
the basal two-thirds : microtrichia covering only the apical two- 
thirds to three-fourths of the first posterior cell (R 5 ), more ex- 
tensively along third longitudinal vein (R 4+5 ) than at fourth 
longitudinal vein (M 1+2 ), the apical fifth to fourth of the com- 
