second joint, arista slender, much longer than the third
joint; thorax with four very slender black stripes; abdomen tawny,
short-oval, not longer than the thorax, with a black stripe which does
not extend to the tip, third and fourth segments with a white band along
each fore border; legs very stout, femora tawny; wings cinereous, white
and with testaceous veins at the base, blackish along the costa, and
with a broad black band which is abbreviated hindward, praebrachial vein
forming an obtuse angle at its flexure, from whence it is very slightly
curved inward to its tip, discal transverse vein nearly straight, parted
by much less than its length from the border, and by hardly less than
its length from the flexure of the praebrachial; alulae whitish. Length of
the body 3-1/2 lines; of the wings 6 lines.

Subfam. DEXIDES, _Walk._

Gen. RUTILIA, _Desv._

88. Rutilia plumicornis, _Guerin, Macq. Dipt. Exot._ 11. 3. 82. 3. Pl.
9. f. 8.

Inhabits also Offak, New Guinea.

89. RUTILIA ANGUSTIPENNIS, n. s. _Foem._ Nigro-viridis, capite cinereo
frontalibus atris, thoracis lateribus subpurpurascentibus, scutello
purpureo, abdomine viridi basi purpureo, tibiis ferrugineis, alis
angustis lanceolatis obscure fuscis basi nigris.

_Female._ Blackish-green. Head cinereous, frontalia deep black, widening
much towards the face, epistoma very prominent, arista stout, bare;
thorax with almost obsolete stripes, purplish along each side; scutellum
mostly purple; abdomen dark green, purple at the base; legs black, tibiae
ferruginous; wings narrow, lanceolate, dark brown, black towards the
base, praebrachial vein forming a much rounded angle at its flexure, near
which it is slightly curved inward, and is thence straight to its tip,
discal transverse vein very slightly undulating, parted by less than
half its length from the border, and by much more than half its length
from the flexure of the praebrachial; alulae dark brownish cinereous.
Length of the body 8 lines; of the wings 16 lines.

Gen. DEXIA, _Meigen._

90. DEXIA PECTORALIS, n. s. _Foem._ Testacea, capite pectoreque albis
frontalibus atris, antennis fulvis, thorace cinereo vittis quatuor
nigris, abdomine fulvo apicem versus spinoso fasciis duabus nigris,
pedibus longis tibiis tarsisque nigris, alis cinereis venis subfusco
late marginatis.

_Female._ Testaceous. Head white, frontalia deep black, widening towards
the face, facialia without bristles, epistoma prominent; antenna