1957] 
Hull — New Asilidae 
73 
white hairs anteriorly between the humeri. Bristles of 
lateral margins yellowish white and weak; 2 on noto- 
pleuron, 4 above wing, 2 on post callus and the scutellar 
margin with 4 pairs of slender hairs. Legs : The whole 
of the femora and all of tibiae except extreme apex and 
the extreme base of the basitarsi yellowish. Remaining 
tarsi blackish. Pile appressed and white or yellowish 
white. Bristles weak, short, except on the anterior and 
middle tibia, few in number and of the same color as the 
pile. Claws fine, sharp, black with the basal third yellow- 
ish. Pulvilli pale, thin, well developed. Wings : The wings 
are nearly hyaline, the second vein and the third vein 
on the basal part yellow, other veins light brown. Marginal 
cell open though narrowly. Abdomen : The abdomen is 
shining black. All of the first segment except the narrow 
posterior margins greyish white pollinose. Similar pollen 
covers approximately one-half of the second and third 
segments, being slightly decreased submedially and slightly 
increased in the middle and laterally widely covering the 
whole lateral margin. On the fourth and fifth and sixth 
segments a little less than half of the segments are covered 
by this band. Also the posterior margin of the second 
and fifth segments narrowly black except laterally. Pile 
appressed, setate, short and reddish yellow on the black 
portions, shining white on the pollinose portions. Ter- 
minalia short and black with white pile. 
Female similar to the male. 
Type. Male; near Navajo, Arizona, July 11, 1954, F. M. 
Hull collector. Allotype, female, 9 paratype males, 2 para- 
type females, all with the same data. In the collection of 
the author. 
Laphystia anmilata interrupt a, new subspecies 
Similar to Laphystia annulata, new species but with the 
grey bands on the abdomen distinctly interrupted, each 
half attenuate so that also more of the posterior margin 
is shining black. 
Type. Female; near Navajo, Arizona, July 11, 1954, 
F. M. Hull collector. In the collection of the author. 
