70 
FRED.V.THEOBALD 
broader with expanded apex with numerous serrations, and apparently a 
few irregular narrow out-standing pale scales of similar size throughout 
their length (3 c). 
Proboscis moderately long and thin clothed with deep brown almost 
black scales, labellæ very acuminate ; palpi not quite as long as the pro¬ 
boscis, scaled with deep brown scales, swelling gradually towards the 
apex, the apical segment large, one joint only can be detected, but pro¬ 
bably a basal one exists. Antennæ 
brown with pale bands below the who¬ 
rls of verticillate hairs, hairs deep 
brOAvn. 
Thorax dark brown with slaty 
sheen and with short dull golden cur¬ 
ved hairs projecting backwards. Scu- 
t ellum pale yellow! sh-brown. Meta- 
notum deep brown. 
Abdomen black, nude but with 
black hairs, narrow basally but expan¬ 
ded apically ; genitalia densely hairy. 
Legs long and thin, brown, the 
coxæ and venter of the femora pale 
ochreous. Ungues apparently all equal 
and simple. 
Wings with brown scales of the form shown on plate. The subcostal 
cell tinged with brown, rest of the membrane transparent; the first sub¬ 
marginal cell very small, its stem more than four times the length of the 
cell; the posterior cell about two and a half times the length of the former 
and about twice its width ; stem of the second posterior cell a little lon¬ 
ger than the cell, curved about its centre; the third long-vein also curved, 
continued to the base of the Aving as a distinct pseudo-vein ; fifth vein 
with its upper branch distinctly waved, after its junction with the po¬ 
sterior cross-vein ; sixth long-vein nearly straight until its apex where it 
curves abruptly, a distinct pseudo-vein between the fifth and sixth ; mar¬ 
ginal cross-vein very long and prominent ; the supernumerary very small, 
the mid as long as the marginal, joining the supernumerary; the po¬ 
sterior not as long as the mid and close to it. Halteres with the pale 
stem much SAvollen basally, constricted apically, the knob black. 
Length : 5*5 mm. 
Habitat: Muina, New Guinea (Biró, 31. December 1900). 
Observations. Described from three cT ’s, one dissected. It is a very 
distinct species told at once by the very abnormal venation. I cannot find 
Fig. 3. Birónella gracilis n. sp. — 
Head scales : a black ; b, c yellow 
d a wing scale. 
