4 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
Wing with petiolate apical cell, the petiole only a little before the 
apex of the wing; third costal segment very short, much shorter than 
fifth; first vein bare, third with a few hairs. 
In regard to the real relationships of this genus, it will be noted 
that Coquillett put his species in Myrophasia. Townsend in detect- 
ing the characters of Palpostoma in the specimens did not remove 
them from the drawer containing -Wyiophasia in the wide sense, and 
never published any comment on the proper position of the genus. 
it probably should stand in a tribe by itself. 
TABLE OF SPECIES. 
Hind and apical cross veins parallel, or almost so.....-.-.-.-.-.-.- flava Coquillett. 
Hind cross vein much less oblique than apical. 
Sternopleura in front of middle coxae with a double row of bristles and some 
smaller hairs, male with three sternopleurals at upper margin. 
testacea Robineau-Desvoidy. 
Sternopleura in front of middle coxae bearing a single transverse row of bristles, 
male with only two sternopleurals at the upper margin.. desvoidyi, new species 
PALPOSTOMA TESTACEA Robineau-Desvoidy. 
Palpostoma testacea RoBINEAU-DeEsvorpy, Myiodaires, 1830, p. 429. 
A wholly yellow species with a trace of median brown pollinose 
stripe on the abdomen, which is also sprinkled with brown dots 
from which the hairs and bristles arise. The second abdominal seg- 
ment has a weak row of marginals, the third astronger row, the fourth 
a few weaker. Hind cross vein a little oblique and at its anterior end 
incurved, especially in the male. The front of the female is at the 
narrowest only two-thirds as wide as in the male. 
Length, 6 mm. 
Five males, one female, Cairns, North Queensland, Australia, 
J. KF. Ilingworth, collector; four reared from adults of the Scarabeid 
beetle Lepidoderma albohirtum Waterhouse. Three males are returned 
to Doctor Illingworth. 
I decide on this as testacea, since it is exactly the size mentioned 
by Robineau, and comes from Australia—excluding flava from con- 
sideration as not from the continent of Australia. 
PALPOSTOMA FLAVA Coquillett. 
Myiophasia flava CoquittEtt, Proc. Linn. Soc. New South Wales, 1900, p. 390- 
Opsophasiops flava TOWNSEND, Proc. Biol. Soc. Wash., vol. 28, 1915, p. 22. 
Palpostoma testacea RoBINEAU-DeEsvoipy, Towsend, Insecutor Ins. Menst., 1915, 
Deel 
The two males described by Coquillett have the front at narrowest. 
only as wide as the anterior ocellus; the abdomen is spotted with 
