192 THE BLOWFLIES oF NortH AMERICA 
is probable that many of the reports of splendida, metallica, or 
aenea from western states are cuprina. 
A paulina hesperia (Shannon and Dobroscky), new combination 
Protocalliphora hesperia Shannon and Dobroscky, Wash. Acad. 
Sei. Jour. 14:251-252, 1924. (Type, male from Ainsworth, 
British Columbia, No. 26861, U. S. National Museum). 
This species appears to be closely related to metallica as indi- 
eated by Shannon. The general form of the male genitalia is 
similar to that of metallica, but the outer forceps are wider and 
the inner forceps seem to be more heavily sclerotized. Other dif- 
ferences are noted in the description and key. 
Male. Head width 14.0; head height 11.2; lenatn at anten- 
na and at vibrissa 6.5; eye height 8.7; bucca 0. 24 eye height; front 
at narrowest 0.7 of ined width, 0.14 i vertex and 0.35 at lunule; 
parafaciale opposite lunule less in width than distance between 
vibrissae in proportion 0.8:2.0; squamal lobes infuseated; colora- 
tion and chaetotaxy mainly as in metallica. Male genital seg- 
ments (pl. 21, E and F) as illustrated. 
Female. Head width 12.5; head height 9.7; length at an- 
tenna 7.0 and at vibrissa 6.2; eye height 7.0; bueca 0.26 eye 
height; front at narrowest (at vertex) 0.27 head width, 0.40 at 
lunule; parafaciale opposite lunule less in width than in dis- 
tanee between vibrissae in proportion 1.6:1.8; coloration as.in fe- 
male of sialia. Otherwise similar to male except for normal 
sexual differences. 
Distribution. Nearetic: Northwestern United States and wes- 
tern Canada. 
In addition to the type series, I have seen one male, reared 
from a puparium collected in a nest of Petrochelidon albifrons 
albifrons (Raf.) (Northern Cliff Swallow), September 3, 1936, 
at Kamloops, British Columbia, by G. J. Spencer, and a long 
series of both sexes collected from nests of Goldfinch and Phoebe, 
May and June, 1936, in southern California, by A. J. Basinger. 
A paulina hirudo (Shannon and Dobroscky), new combination 
Protocalliphora hirudo Shannon and Dobroseky, Wash. Acad. 
Sei. Jour. 14:252, 1924. (Type, male reared from war- 
bler’s nest in Colorado, No. 26862, U. S. National Museum). 
?Protocalliphora hirudo var. cuprea Shannon and Dobroscky, 
Wash. Acad. Sci. Jour. 14:253, 1924; Johnson, Bull. N. E. 
Birdbanding Assoc. 1:53, 1925; Boston Soe. Nat. Hist. Oc- 
eas. Papers 7(15) :216, 1925; Bull. N. E, Birdbanding As- 
