264 Mr. F. W. Edwards on 
cence, which is very dense on the eighth sternite and at the 
tip of the pleurite. The hypopygium (fig. 10) is very little 
wider than the rest of the abdomen and about as long as the 
sixth and seventh segments combined. Legs rather light 
brownish, tarsi darker, femora with a dark brown ring a little 
before the tip. Wings (fig. 11) with the ground-colour 
rather dark brownish grey; costal cell and area round the ~ 
stigma yellowish; stigma rounded, blackish ; a small spot 
over the base of Rs; a dark cloud over and surrounding the 
cell lst mz. Pale markings distributed as follows :—A patch 
near the tip of the upper basal cell; a mark shaped something 
like the figures 80 conjoined occupying the apical half of the 
lower basal cell; a small spot near the base of cell Cu, ; 
small streaks along An and Ax near their tips; a spot in 
cell R; connected with a larger one in cell Ry,;; small spots 
on the wing-margin in cells R,,;, 2nd M,, M3, and Cu, and 
two incell An. Rs gently curved, as long as Ry; marginal 
cross-vein joining R.,3 just before the fork ; R—M cross-vein 
absent, R,,; being tused with M,,. for a short distance ; 
M-Cu cross-vein present, but very short. Halteres with 
rather light brown stem; basal half of knob black, apical 
half dark grey. 
Length of body 21 mm. ; abdomen 12°5 x 2°5 mm.; wing 
17°35 x5 mm. 
Arisan, 8000 ft., 10. x. 1912, 1 g (I. Mitobe). 
Brithura crassa, sp.n. (Pl. XII. fig. 12.) 
I take this opportunity of describing under this name a 
single male specimen in the British Museum Collection which 
was purchased from Stevens in 1852 and is simply labelled 
“‘ Hast Indies” (¢. e., India?). It differs from B. conifrons 
as follows :—Thirteenth antennal joint only one-third as long 
as the twelfth. Thoracic dorsum with the stripes scarcely 
perceptible, almost as dark as the ground-colour. Abdomen 
rather longer in proportion, the tergites darker laterally ; 
hypopygium (fig. 12) dark brown like the rest of the abdo- 
men, much longer than in £. conifrons; a remarkable 
downwardly projecting organ (? ninth sternite) on the under- 
side; there is some orange hair at the base of the claspers, 
though not on the pleurite. Wing-markings similar, but 
there is no definite dark cloud over the discal cell; there is 
only a <-shaped mark in the lower basal cell, the apex of 
the < pointing towards the base of the wing; the pale spots 
along the wing-margin are rather more distinct, and there is 
an additional one present in the cell My. Rs half as long 
