76 THE BLOWFLIES OF NortH AMERICA 
metacephalic suture; frontale yellow orange anteriorly; frons 
at narrowest only 0.01 of head width, 0.08 at vertex, and 0.18 
at lunule, orange in ground eolor, covered with golden pollen 
anteriorly, brownish posteriorly, and with only a few weak 
hairs outside the frontal rows of bristles; frontal row of bristles 
not extending posteriorly beyond narrowest part of frontale, 
consisting of about eight bristles, only the anterior ones strong; 
ocellar triangle with strong proclinate accessory ocellar bristles 
immediately behind posterior ocelli; vertex brown, brownish 
pollinose; parafaciale orange, golden pollinose, 1.0 in width 
opposite lunule, slightly narrower below; faciale with only a 
few dark setae above the oral margin; vibrissae set 3.4 apart; 
palpus orange, 3.0 in length; antenna with third segment 2.5 
times as long as second; arista orange brown at base, darker 
apically, and with dark brown ciliation; postorbits brown, silvery 
pollinose; back of head dark brown, gray pollinose, with one 
row of postocular cilia and with tawny hair; metacephalon 
orange. 
Thorax faintly silvery and without distinct stripes; humerus 
orange, laterally with tawny hair; humeral bristles three; most of 
fine thoracic hair dark; lower and anterior pleura orange brown; 
propleural bristles two; mesospiracular bristles three, both sets 
of bristles placed rather posteriorly among long pale tawny 
hair; sternopleural bristles. two; preacrostichal bristles two, the 
hindmost placed slightly anterior to hindmost predorsocentral 
bristle which is set 2.0 before the suture; preintraalar bristle one, 
the posterior one absent; posterior half of pteropleuron with long 
fine tawny hair; postacrostichal bristles two; sclerites at wing 
base brown to black; tympanic ridge with several brown hairs; 
postalar declivity with a tuft of brown hair toward center; 
spiracles with orange hair, the metathoracie spiracle with a few 
dark hairs ventrally and posteriorly; seutellum with lateral 
bristles two, only the basal one strong; under surface with black 
hair in center and yellow hair laterally; postscutellar plates 
yellow setose. 
Legs with orange coxae, these with yellow pile; femora orange, 
apically orange brown; tibiae and tarsi dark orange brown; 
bristling as in bicolor except femoral hairs longer and in more 
continuous series. 
Wing (pl. 8, D) hyaline, anteriorly brownish; basicosta 
yellow; subcostal sclerite brownish with brownish pubescence; 
costal sections 2 to 6 in the proportions 90:60:110:80:10; squamal 
lobes mostly hyaline, the upper lobe with lateral portion of rim 
brown, the lower lobe with inner portion brown. 
