200 _ Tue BLowr ies or NortH AMERICA 
spines on the second segment are set more closely together, and 
the individual spines in these rows are longer and more hairlike. 
Whitehead (1933) collected 121 puparia of this species from a 
nest of purple martins in Quebec; the chalcidoid parasite Mor- 
momella vitripennis (Walker) was reared from 92.74 percent of 
them. 
A paulina sapphira, new species 
This interesting little species differs from. the typical Apaulina 
in having two posterior bristles on the front tibia and in having 
apical bristles on the scutellum. These characters are found in 
Protocalliphora, but not in other species of Apaulina. In other 
respects its affinities are definitely with Apaulina. The propor- 
tions of the head are similiar in many respects to those in aviwm, 
but the parafaciale is considerably narrower. | 
Male. Head height 9.0; length at antenna and at vibrissa 
6.0; eye height 6.5; bucca 0.33 eye height; front at narrowest 0.15 
head width, 0.21 at vertex and 0.43 at lunule; head width 11.4; 
parafaciale opposite lunule and distance between vibrissae in pro- 
portion 1.8:1.8; parafrontale with golden pollen; entire head 
black, vertex shining; antenna black, second segment orange 
red at apex, third segment only a little longer than second; 
palpus orange brown. 
Thorax metallic blue black; propleuron with a few distinet 
black hairs; predorsocentral bristles three, strong in presutural 
bristles only; scutellum with one discal bristle and with minute 
apical bristles. | 
Legs with fore tibia with two posterior bristles, one near mid- 
dle and one near apical third; middle tibia with three posterior 
and three posterodorsal bristles. 
Wing hyaline. 
Abdomen bright metallic blue green with purple reflections, 
with whitish pollen, this changing under shifting illumination; 
with a mid-dorsal longitudinal shining stripe. 
Genital segments apparently similar to those of hesperia, the 
outer forceps being about four times as long as broad. 
Female. Head height 8.5; length at antenna and at vibrissa 
6.0; eye height 6.4; bucea 0.31 the eye height; head width 11.0; 
front at narrowest (vertex) 0.30 head width, 0.43 at lunule; para- 
faciale opposite lunule equal in width to distance between vi- 
brissae. Otherwise similar to male except for normal sexual 
differences. 
Length. 7.5 mm. 
Type. Male, No. 53264, U. S. National Museum. 
