302 THE BLOWFLIES oF NortH AMERICA 
width opposite lunule, black on upper half or more, deep reddish 
below, with silvery pollen, and with black setae on upper half; 
elypeus dark reddish brown, thinly silvery; epistoma only 
slightly narrower than clypeus and elongate; vibrissae 1.4 above 
oral margin and set 3.1 apart; faciale deep red, with several rows 
of short black setae which ascend about three-fourths the dis- 
tance to the antennal base; cheek grooves and vibrissal angle 
deep red; palpus yellow orange to orange, 4.5 in length, with 
abundant black setae on dorsal and ventral margins, the setae 
on middle of ventral margin in a group and three-fourths as 
long as palpus; antennal segments orange brown to brownish 
black, apex of second and base of third segments orange; third 
segment 4.1 times as long as second, reaching four-fifths the 
distance to the vibrissa; arista black, the middle yellowish, cilia- 
tion black, long above and below, the apical third bare; back of 
head silvery, with two or three rows of postocular cilia, around 
occiput and below with pale yellowish hair. 
Thorax purplish black to black, hardly shining but with silvery 
pollen which is only apparent on dorsum behind head; chaeto- 
taxy like that of vomitoria; sclerites at wing base black; squamo- 
pleuron with dark brown pile; seutellum with six lateral bristles. 
Legs black, claws somewhat elongate; chaetotaxy mainly like 
that of vicina except middle tibia with two anterodorsal bristles, 
one ventral bristle near apical third and two posterior bristles, 
and hind tibia with three anterodorsal bristles, one anteroven- 
tral bristle and two posterodorsal bristles. 
Wing hyaline, base from basal third of second section of costa 
and second section of fifth vein tinged with dark brown; basi- 
costa black; subcostal sclerite dark orange brown with brown 
pubescence; costal sections 2 to 6 in the proportions 100 :60 :140:- 
50:14; squamal lobes tinged with dark brown, their rims nearly 
black. 
Abdomen ovotruneate posteriorly, deep greenish blue, mostly 
shining, with only thin whitish pollen and with erect black hairs; 
first segment almost black; second segment with a narrow medio- 
dorsal longitudinal black stripe; fourth segment shining dark 
blue; sternites wide, the fifth widest. 
Genital segments black, with long black hair; both segments 
large, globose; outer forceps longer than inner (pl. 27, J and K) 
as illustrated. 
Female. Head height 16.0; eye height 10.0; bueca 0.60 eye 
height; length at antenna 9.0 and at vibrissa 10.0; parafaciale 
opposite lunule 3.2 in width; distance between vibrissae 4.0; 
frontale mahogany red, darker posteriorly, 0.5 frontal width; 
