SUBFAMILY CALLIPHORINAE 213 
rounded angle; anterior cross vein slightly basad of middle of 
second section of fourth vein and oblique; posterior cross vein 
doubly arcuate; last section of fifth vein one-seventh as long 
as preceding section. 
Abdomen with second segment with a row of long and re- 
cumbent marginal bristles; third segment with long and suberect 
marginal bristles; fourth segment with considerable erect hair 
and a marginal row of bristles; ventral membrane narrowly 
exposed in female; sternites wider than long, the fifth sternite 
of male long and obvious in profile, somewhat resembling that 
found in Phaenicia pallescens. 
Male genital segments small but prominent, with long and 
erect setae. 
Francilia alaskensis Shannon 
Francilia alaskensis Shannon, Insecutor Inscitiae Menstruus 12: 
73, 1924; Townsend, Rev. de Ent. 1:72, 1931; Manual of Myi- 
ology, vol. 2, p. 171, 1935; ibid., vol. 5, p. 149, 1937. (Type, 
male from Old Crow, Alaska, No. 26690, U. S. National Mu- 
seum). 
Lucilia alaskensis (Shannon). Shannon, Wash. Ent. Soe. Proc. 
- 28. (6) 129, 1926; Aubertin, Linn. Soc. London, Jour., Zool., 
38. (260) :3898, 1933. 
A medium-sized blue-green species with black legs and hyaline 
wings which has the vibrissa at the oral margin and the penulti- 
mate segment of the arista elongate. 
Male. Head width 10.4; length at antenna 5.6 and at vibrissa 
6.6; oral margin slightly protruding beyond vibrissal angle in 
profile; eye height 6.7; head height 8.5; bucca 0.26 of eye height, 
black, with thin gray pollen and with scattered black hair; fron- 
tale dark reddish brown at lunule, black posteriorly, striate, 0.6 
as wide as front; front at narrowest 0.138 of head width, 0.27 at 
vertex and 0.27 at lunule, with bright whitish-silvery pollen 
over black ground color, and with a few minute black hairs out- 
side frontal row of bristles; frontal bristles about 10, the rows 
extending to about the middle of the second antennal segment 
and diverging as they follow the margins of the frontale; ver- 
tex black, subpollinose, grayish in some lights; accessory ocellar 
bristles behind and between posterior ocelli; clypus black, with 
silvery pollen; parafaciale 1.2 in width opposite lunule, black, 
covered with bright whitish silvery pollen; vibrissae set 2.3 apart; 
haustellum black, with black setae; palpus 3.7 in length, dark 
yellow brown to black, with black setae; antenna black, third 
