GRAPTOMYZA. Lrg 
on account of the good preservation of the material collected by 
Dr. Graham, while the specimens on which I founded these species 
were badly preserved. Bigot described the arista as bare; but 
this is an error, due to ddan fact that the hairs are easily aliaded, 
like those on the eyes; in reality, the arista is shortly plumose, as 
the other species. 
G. pentaspila corresponds to the female, which is larger and in 
which the third and fourth abdominal segments have the median 
black spot divided into two by a narrow yellow line; G. melanura 
corresponds to the male, which is smaller and has only a triangular 
black spot on the third segment, while the fourth is entirely black. 
The mesopleure have in both sexes a perpendicular yellow band, 
attenuated below and in continuation with the sutural band. 
The bristles on the thorax and scutellum, and the secutellum 
itself are as in the following species. The four anterior legs, 
including the front coxze, are entirely pale yellow; hind legs with 
black coxe, the femora with the apical hel abruptly shining black, 
the tibiz black, densely clothed with hairs, the tarsi yellow. The 
first joint of the tarsus of the middle legs of the male is simple, 
eylindrical, and almost as long as the other joints together. The 
hind tibiee bear stout black bristles placed in a row along the ex- 
ternal fore border, which are more developed in the female. In the 
wings, the bristles on the second vei run from the base to its 
bif Neato, those on the fourth vein are present only on the portion 
before the cross-vein dividing the second basal from the discal cell; 
but these bristles seem to be also easily abraded. There are on the 
wings three brown cross-bands; the fir st ver vy short below the stigma, 
not passing the second vein; the second broader, extending beyond 
the hind cross-vein ; the third smaller, passing the subapical cross- 
vein. 
Five males and two females from Obuasi, Ashanti, v.—xi. 1907, 
‘aught on window or in bush (Dr. W. A. Graham). 
Graptomyza xanthopoda, sp. n 
2. Length of body 6 mm. 
A small. species, closely allied to the preceding one, but distin- 
guished by having a bare fourth vein, less distinct median abdominal 
spot, wholly yellow hind legs, and broadly spotted wings 
Head shining black, the occiput almost without any tomentum ; 
frons broad, flat, with a’keel and a round small fovea on each side 
in the middle; the frons is clothed with almost yellowish hairs, 
which become darker over the antenne, and is black with four 
subquadrate yellow spots, two near the ocelli and two on the sides 
of the slightly prominent supra-antennal tubercle, all these four 
spots being in contact with the eyes; face shining yellow, mode- 
rately pr oduced, with yellowish hair, and three ill- def ined Urdwhiish 
stripes, one in the middle and one on each side ; peristoma vellow, 
with whitish hair behind: vertical fringe vellowish: eves clothed 
with short whitish hairs; antennize black, the verv elongate third 
