SuBraMILy CALLIPHORINAE 995 
tance to the vibrissa which is above the oral margin; arista black 
with long black cilia above, shorter below, for three-fourths its 
length; back of head black, strongly silvery pollinose, with about 
four rows of postocular cilia and with considerable pale hair 
about the occiput; metacephalon black with a few pale hairs. 
Thorax black, silvery pollinose, with five dorsal longitudinal 
stripes which are apparent from posterior view; hindmost pre- 
acrostichal, predorsocentral and preintraalar bristles 2.4, 1.8, 
and 0.8 Pecpectivelt before suture; postintraalar bristles inten 
preparapteron orange. 
Middle tibia with three or four anterodorsal bristles and three 
posterior bristles; hind tibia with three MM Oeaah ae bristles, 
otherwise like Lombard: 
Wing with costal sections 2 to 6 in the proportion 105 :72 :140: 
50:10; lower squamal lobe with hind margin widely whitish. 
Abdomen blue, with heavy whitish pollen apparent in most 
lights, the second segment with a narrow shining mediodorsal 
longitudinal stripe. 
Genital segments black, outer forceps straight, the marginals 
parallel, the tips rounded and blunt; inner forceps weak, elongate 
and narrow. Internal anatomical details (pl. 27, E, F, and G) 
as illustrated. 
Female. Head height 12.8; eye height 8.3; length of head at 
vibrissa and at antenna 8.1; width 18.0; bueca 0.51 eye height; 
parafaciale opposite lunule 2.9 in width; distance between vi- 
brissae 3.3; third antennal segment 4.7 times as long as ‘second; 
front at narrowest (at vertex) 0.36 head width, 0.42 at lunule; 
frontale reddish anteriorly; parafrontale and parafaciale often 
with pollen yellowish or brownish. Wing with costal sections 2 
to 6 in the proportions 100:70:140:50:12. Otherwise similar 
to male except for normal sexual differences. 
Length. 9-12 mm. 
Distribution. Nearetic: San Martin, Mexico, to Alaska, and 
as far east as Indiana and Ontario. Most abundant in Colorado 
and New Mexico. It does not occur in Southeastern United States 
so far as I know. It is the most abundant species of Calliphora 
in Menard County, Texas, occurring throughout the year in that 
locality according to Parish and Cushing (1939b). They found 
it uncommon only during the summer season. It was collected 
most frequently in moderate shade, with little or no wind pro- 
tection, in either woods or open country, and at low to moderate 
elevation. 
