SUBFAMILY CALLIPHORINAE " 321 
worms in Australia. The following is an abstract of her report 
upon the species: 
The female is larviparous; the ovaries of one female were 
found upon dissection to contain 550 larvae in various stages 
of development. 
Larva. First instar: Length approximately 1.5 mm.; typically 
ealliphorid in shape; translucent. Segments 2 to 12 with spinose 
bands anteriorly; segments 4 to 11 dorsally each with a tuft of 
recurved, semitransparent, larger spines. Amphipneustic; pos- 
terior spiracles each with but a single aperture which has an 
inward projection at one side. Cephaloskeleton with pharyn- 
geal sclerites divided posteriorly into the usual dorsal and ven- 
tral cornua; labial sclerites two narrow pointed and slightly 
ventrally curved hooks which articulate with the anterior 
branches of the pharyngeal sclerite, and ventrally and toward 
base with a pair of small triangular sclerites. Four or five days 
are spent in this instar under the skin of the host. 
Second instar: Second segment constricted in middle and — 
spinose on anterior half; segments 2 to 12 with anterior spinose 
bands, usually with five rows, these not in the form of tufts as 
in the previous instar, but equally developed dorsally and ven- 
trally; segments 5 to 8 with a few spines on posterior dorsal and 
ventral borders; segment 9 with some rows around dorsal and 
ventral margins. Anterior spiracles small, projecting laterally 
from posterolateral border of second segment; posterior spiracles 
on mediodorsal margin of weak depression, each slightly raised 
and with two slit-like apertures. Anal protuberance large, 
rounded, covered with minute spines. Cephaloskeleton with 
anterior edge of pharyngeal sclerite with a narrow chitinous 
rod projecting forward over dorsum of middle sclerite; hypo- 
pharyngeal sclerite small and closely connected with basal 
sclerite; ventrally, with a blunt projection, and a narrow curved 
rod-like sclerite projecting forward to the base of the labial 
sclerite which is shorter and broader than in the previous instar, 
with a ventral projection in middle, strongly curved, sharp, and 
with two small sclerites near ventral projection. About 4 days 
are passed in this instar. 
Third instar: Color creamy white, of typical calliphorid 
habitus. No conspicuous oral grooves but with fine branched 
transparent lines radiating from oral aperture. Segments 2 to 
12 with spinose bands anteriorly, each band composed of small 
light brown spines which are arranged in broken undulating 
lines, each spine projecting backwards; bands equally con- 
spicuous on dorsal and ventral surfaces, less strongly developed 
