244 THE BLOWFLIES OF NortH AMERICA 
Mexico, Arizona, and British Columbia, Only the male holotype 
is now in the National Museum and apparently it is mexicana. 
Lucilia unicolor was described by Townsend from five females 
collected in New Mexico, Mexico, and British Columbia. Only 
the female holotype is now in the National Museum, and appar- 
ently it is also mexicana. Lucilia mexicana does not seem to have 
the distribution noted for infuscata, and it is concluded that the 
two series of type specimens included more than one species. Rob- 
erts (1930) states that one specimen of mexicana was collected 
in a trap at Ames, Iowa, on October 29; the distribution, there- 
fore, may be considerably wider than indicated. 
A species which is very similar to caeruleiviridis, but has two 
or more rows of postocular cilia. 
Male. Head width 13.2; height 11.0; length at antenna 5.4 and 
at vibrissa 5.9; eye height 9.4; bucca 0.31 of eye height, orange 
brown to dark brown, with thin silvery pollen and with dark 
hair, no pale hair before the metacephalic suture; frontale red- 
dish brown at lunule and darker brown toward ocellar triangle: 
very narrow at the narrowest part but as wide as parafrontale at 
lunule; front at narrowest 0.05 of head width, 0.14 at vertex 
and 0.23 at lunule, dark brown to black and with bright silvery 
pollen, and with a few scattered dark setae on parafrontale; 
frontal rows of bristles considerably divergent anteriorly as 
they follow the frontale and extend almost to the base of the 
second antennal segment, each row consisting of about 14 bris- 
tles which are strong anteriorly but weak at the narrowest por- 
tion of the frontale; a reclinate frontoorbital bristle slightly 
anterior to and opposite foremost ocellus; parafaciale opposite 
lunule 0.9 in width and considerably wider below, with bright 
silvery pollen over orange-brown ground color; faciale orange 
brown to dark brown, with a row of short fine setae which 
extend less than one-third the distance to the antennal base; 
vibrissae placed 0.6 above oral margin and 2.4 apart; palpus 3.4 
in length; antenna with first and second segments dark brown, 
the latter orange at apex, third segment orange at base and 
eradually darkening to dark brown apically; arista brown with 
long brown cilia; back of head black with whitish pollen around 
occiput, with two rows of postocular cilia and numerous pale 
hairs which are most apparent on the orange colored meta- 
eephalon. 
Thorax metallic blue green with purplish reflections, mostiy 
shining, but with thin whitish pollen in certain lights especially 
on dorsum anteriorly between humeri and on pleura; propleuron 
with black setae; basal selerites at wing base dark brown te 
