SUBFAMILY CALLIPHORINAE 269 
This is the greenbottle fly involved in experiments on the 
virus of poliomyelitis discussed by Sabin and Ward (1941). 
Use wm surgery. <A full bibliography on the use of sericata 
larvae in surgery is given by Brumpt (1933). Dr. Wm. S. Baer, 
of Johns Hopkins Medical School, introduced this treatment in 
1929 and 1930, and during the following 6 to 8 years maggots 
of this species were used throughout the world for the treat- 
ment of pus-discharging wounds because of the ability of the 
larvae to remove necrotic tissue. 
Phaenicia thatuna (Shannon), new combination 
Lucia thatuna Shannon, Wash. Ent. Soe. Proc. 28(6) :132, 
1926; Aubertin, Linn. Soe. London Jour., Zool. 38:417, 
1933. (Type, male from Mount Moscow, Idaho, No. 28889, 
U. S. National Museum. ) | 
A blue-green species with the habitus of Bufolucilia silvarum, 
but without median marginal bristles on the second abdominal 
segment. 
Male. Head width 11.6; length at antenna 5.4 and at vibrissa 
5.0; eye height 7.6; height 9.7; epistoma short, curved strongly 
forward from clypeal plane, yellowish orange; metacephalon 
hardly apparent in profile; bueca 0.28 of head height, dark red- 
dish brown to black, with thin silvery pollen, and with scattered 
dark hair, no pale hair before the metacephalic suture; frontale 
dark reddish brown, very narrow near middle but as wide as 
parafrontale at lunule; front at narrowest, 0.05 of head width, 
0.15 at vertex and 0.22 at lunule, black, with silvery pollen and 
with a row of minute black setae near middle which extend 
anteriorly from near narrowest portion to foremost frontal 
- bristle; frontal row of bristles composed of about 12 bristles, 
these long and well-developed anteriorly, the rows composed of 
weak and hairlike bristles at narrowest part of front, and diverg- 
ing anteriorly as they follow the margins of the frontale, the 
foremost bristles placed nearly opposite the middle of the second 
antennal segment; ocellar triangle with several weak bristles, 
one or two pairs longer and in line with ocellar pair; clypeus 
yellow to orange; epistoma brown to black above, with thin sil- 
very pollen; parafaciale dark brown to black, with silvery whitish 
pollen, 0.8 in width opposite lunule; facialium slightly convex 
in profile, orange colored below, orange brown above, with sev- 
eral rows of short black setae which ascend about. one-third the 
distance to the antennal base; vibrissae set 0.6 above the oral 
margin and 2.4 apart; palpus 3.1 in length; first segment of an- 
