Genus Desvoidea. 135 
ones on each side ; the 6th and 7th have no bristles, the eighth 
a single lateral pair ; the siphon is short and brown, with a row 
of spines near its base, four elongated oval pale “ flap-tails” ; a 
patch of long brown hairs (dorsally placed) on the flaps, and a 
small ventral fan, and a small fan-shaped lateral bunch on each 
side between the siphon and the last segment. 
Length.—8 mm. 
The pupae, Dr. Durham says, are at first pale ochraceous and 
later deep intense black. The siphons (fig. 76, a) are short and 
broad, and end as shown in the figure. The anal plates have a 
fringe of long hairs and the first abdominal segment a distinct 
plumose tuft composed of several plumose bristles. 
The larvae from which this description was drawn up were 
taken by Dr, Durham in a stable catch-pit, very foul. 
They hang almost head downwards, according to Dr. Durham’s 
rough sketch sent me. 7 
DESVOIDEA FUSCA. 2. Sp. 
Head black, with white border to the eyes and a white median 
patch. Thorax deep brown, with rich brown scales and pale side 
line ; pleurae with white patches. Abdomen coal-black, with 
white lateral basal spots, not seen dorsally. Legs jet-black, no 
white knee spots. Wings much as in obéurbans, but the cross- 
veins different. Male palpi with the apical joint markedly 
shorter than the penultimate. | 
@. Head clothed, with flat black and white scales, the white 
around the eyes and in the middle, and a small patch on each 
side ; palpi and proboscis black, the apex of the former apparently 
with some white scales. 
Thorax black, with narrow curved, flattish bronzy scales ; 
prothoracic lobes with white scales and also a few white scales 
laterally, especially at the base of the wing ; pleurae brown, with 
four prominent silvery-white patches; scutellum brown, with small, 
flat, black scales and black border-bristles ; metanotum brown. 
Abdomen jet-black, with basal white lateral spots, almost ex- 
tending along the sides as a line; venter mostly white scaled. 
Legs with brown coxae and white scales, bases of the femora 
white, remainder jet-black; hind tibiae longer than the hind 
metatarsi; ungues of fore and mid legs equal and uniserrated, 
hind equal and simple. 
Wings with the fork-cells small, very slightly longer than-the 
