328 Timehri. 
longer than the 2nd, the transverse basal nervure is received shortly, but dis- 
tinctly before the middle. the nervures are darker coloured towards the apex 
of the wings, which have therea faint violaceous tinge. Female. Length 
12 m.m. 
The antenne are short, not much longer than the head and thorax united ; 
they taper distinctly towards the apex, and are densely pilose, the 3rd joint is 
not quite one-fourth longer than the 4th. A distinct furrow runs from the poste- 
rior ocelli obliquely to shortly beyond the anterior ; :they are bounded laterally 
by a deeper, wider furrow ; there is a large oblique fovea on either side, half way 
between the latter and the antenne. Apex of clypeus transverse ; the labrum 
large, almost semi-circular. Middle lobe of mesonotum distinctly separated ; 
its centre with a well marked furrow. Cenchri large, white. 
Monophadnus spilonotus, sp.n. 
Deep black, the prothorax, the mesonotum except for a broad triangular 
black mark on the basal half of the middle lobe, scutellum and the pleure 
rufous ; wings fuscous, the stigma and nervures black, the former with the 
hinder half fuscous ; the 3rd abscissa of the radius is as long as the basal 2 
united ; the lst recurrent nervure is received shortly beyond the middle, the 
2nd at the apex of the basal fourth ; there is a black round point in the lower 
apical part of the 2nd cubital cellule ; the 3rd transverse cubital nervure is 
broadly, roundly curved backwards and is broadly bullated. Female. 
Length 8 m.m. 
Antenne short, thick, densely pilose, tapering towards the apex, the last 2 
thinner than the preceding, the last longer than the penultimate, the 3rd about 
one quarter longer than the 4th ; apex of clypeus transverse. Frontal area open 
below, the sides bounded by furrows which are roundly curved outwardly ; 
there is a fovea below it and a more distinct, wider one on either side, the middle 
of the front is bounded by wide, oblique furrows, rounded behind, head and 
thorax densely covered with short black pubescence. There is a deep, clearly 
defined furrow in the centre of the basal lobe of mesonotum. 
Monophadnus guyanensis, sp.n. 
Rufo-testaceous, the antenne except the scape, head, except the clypeus and 
labrum, the apical half of the middle tibia the whole of the posterior, the 4 
posterior tarsi and the apical 2 abdominal segments, black ; wings light fuscous, 
iridescent, black, the costa the nervures paler, the stigma rufo-testaceous, paler 
behind ; the 3rd abscissa of the radius is as long as the basal 2 united ; the 
transverse radial nervure is received close to the 3rd transverse cubital ; the 
lst recurrent nervure is received shortly before the middle, the 2nd in the basal 
fourth. Female and Male. Length 8-9 m.m. 
The face, clypeus, labrum, mandibles and palpi are pallid testaceous ; the 
apex of clypeus transverse. There is a longish, oval, deep fovea in the centre of 
the front below; the front ocellus is in a pit; there is a A-shaped furrow 
behind it. Antenne short, thick, distinctly tapering towards the apex; the 
3rd joint not much longer than the 4th, the last not much longer than the penul- 
timate. | 
a 
