124 THE BLOWFLIES OF NortTH AMERICA 
0.22 eye height, shining orange, with whitish-yellow hairs below 
and posteriorly, but with dark hairs on upper anterior area; 
front at vertex 0.13 of head width, 0.06 at narrowest (1.5 an- 
terior to foremost ocellus), and 0.29 at lunule, black with dense 
yellowish-silvery pollen, and with numerous whitish hairs out- 
side the frontal row; vertex subpollinose, black, with consider- 
able black hair; frontale very narrow below ocellar triangle but 
gradually widening to lunule, usually black but sometimes 
orange brown; postocellar bristles minute; frontal row of 
bristles following the margin of the frontale and extending an- 
teriorly almost to the middle of the second antennal segment, 
consisting of 13 or 14 bristles, these shorter and hairlike pos- 
teriorly but apparent nearly to ocellar triangle; antenna with 
first and second segment orange brown; third segment three 
times as long as second and dark orange brown; faciale with 
several rows of short black setae which ascend nearly four- 
fifths the distance to the antennal base; vibrissae set 1.6 apart; 
parafaciale 1.0 wide opposite lunule, orange red to black, with 
whitish pollen, and bare on lower third, the upper two-thirds 
with short yellowish hair along the eye margin and toward 
antennal base; back of head blackish, with scattered yellowish 
hair which becomes longer and more abundant below. 
Thorax black, metallic bluish, with thin whitish pollen, and 
with three wide longitudinal stripes on dorsum which extend 
to seutellar apex, the intermediate lighter stripes strongly metal- 
lic bluish in certain lights; bristles anterior to suture small, but 
two or three predorsocentral bristles apparently larger than: 
surrounding hairs; preintraalar bristle one, strong; mesopleu- 
ron with seattered erect black hair except anteriorly; sterno- 
pleuron with scattered whitish hair which is especially abun- 
dant and long below; postscutellar plates with black setae; meso- 
thoracic spiracle with white hair. 
Legs black, with considerable soft whitish hair; middle femur 
without anterior bristles; middle tibia with one anterodorsal 
bristle and one posterodorsal bristle near apical third; hind — 
tibia with two well-defined anterodorsal bristles, one near mid- 
dle and one near apical fourth. 
Wing infuseated basally; costal sections 2 to 6 in the propor- 
tions 61:38 :77 :28:7.4; third vein setulose one-fourth the distance 
from base to cross vein; subcostal sclerite and basicosta yellow, 
the former setose; upper squamal lobe hyaline, white; lower 
squama tinged with pale yellow to brown. 
Abdomen dull blackish aeneous with metallic purple and eu- 
preous reflections and with very slight pollinosity except for 
