180 THE BLOWFLIES oF NortH AMERICA 
diameter, thickened only at base and uniformly tapering to apex, 
with long plumosity~-for fully three-fourths its length; back of 
head evenly rounded; slightly concave above occiput especially 
in male, with one well-defined and several ill-defined rows of 
postocular cilia. , 
Thorax with preacrostichal bristles strong; posthumeral 
bristles present; notopleural bristles two; sternopleural bristles 
three, the lower anterior bristle always weak but very rarely 
absent; hypopleuron bare on anterior half or more; prosternum 
narrow, laterally setose; postalar declivity bare; squamopleuron, 
ampullae and preparapteron covered with fine short decumbent 
pile; postintraalar bristles three; preintrapostalar bristle pre- 
sent; postsupraalar bristles three; mesothoracic spiracle elongate- 
oval and of moderate size; metathoraciec spiracle angularly 
rounded and of moderate size; scutellum with subbasal and 
apical lateral bristles long and strong and usually with three 
lesser lateral bristles, subapical discal bristles present, apical 
bristles absent (except in sapphira). 
Legs with hind coxa bare posteriorly; fore tibia with one pos- 
terior bristle at or near apical third. (except in sapphira) ; fore 
femur with dorsal, posterodorsal and posteroventral rows of 
bristles; middle femur with two or three short anterior bristles 
near middle and with one long thin anteroventral bristle near 
basal fourth; hind tibia with posterodorsal row of bristles. 
Wing (pl. 9, H) with subeostal sclerite setose; remigium 
basally below bare; third vein setose at base; fourth vein bent 
angularly toward wing apex; apical cell open and ending con- 
siderably before wing apex; anterior cross vein oblique and at 
or near middle of second segment of fourth vein; posterior cross 
vein doubly arcuate; last section of fifth vein one-fourth to one- 
fifth as long as preceding section; upper squamal lobe small, 
rounded apically, bare of black hair; lower squamal lobe large, 
elongate-oval, convex on inside margin, rounded apically, bare. 
Abdomen without discal or median marginal bristles; the 
third and fourth segments each with a marginal row of bristles. 
Genital segments of male globose, black, setose, the first with- 
out a marginal row of bristles. 
Genotype. Protocalliphora avium Shannon and Dobroseky 
(1924). 
Several North American authors have published notes upon 
the habits of North American species of Apaulina under the 
name Protocalliphora chrysorrhoea (Meigen). Hendel (1901a, 
p. 210) indicated that Meigen’s description applies to a different 
genus from Schiner’s and that Meigen’s species might be an 
