158 THE ENTOMOLOGIST. 
or thorn on the ventral surface inserted immediately behind the 
joint. There is no such tooth on the tarsus of the third pair. 
Wings: Very darkly scaled with Trichoprosopon-like scales, 
bluish and markedly ribbed. First submarginal cell one-fourth of its 
length longer than the second posterior cell. The stem of the first 
submarginal is about two-thirds the length of the cell. The super- 
numerary and mid cross-veins are close together, the posterior about 
its own length towards the base of the wing. The sixth vein turns 
at right angles to the costa just before its termination. 
Genitalia: The claspers are long, curved, and without terminal 
articulate spine, covered, the basal half with scales, the distal half 
with seven long hairs. The harpes are long, curved, and expanded 
into a flattened blade tapering to a rounded point. 
Length: 5 mm. 
?. Head as in male. Antenne: Much less plumose; other- 
wise similar to those of the male. Palpi: Short, black-scaled, 
acuminate. 
Proboscis, clypeus, thorax, scutellum, pleura, prothoracic lobes, 
halteres, metanotum: As in male. 
Abdomen: As in male, and with the dorsal silvery band on the 
seventh segment complete. ; 
Legs: As in the male, but the last two segments of the hind tarsi 
are of normal form, 7. e. unfeathered. 
Ungues: First pair equal, uniserrate; second pair equal, uni- 
serrate ; third pair equal, simple. 
Wings: Colour and scales as in male. First submarginal cell 
one-fifth of its length longer than the second posterior cell. The stem 
of the first submarginal is usually one-third the length of the cell. 
The supernumerary and mid cross-veins are close together, the pos- 
terior about its own length towards the base of the wing. The sixth 
vein is as in the male. 
Length: 6 mm. 
Habitat. Obuasi, Kumasi, Dompoasi; taken in bush August 
to November. Also reared from larve taken in a small collec- 
tion of water in the hollow of a tree near Dompoasi, Aug. 14th. 
4. Hretmapodites melanopous, nov. sp. 
g. Head, antenne, palpi, proboscis, clypeus: As in No. 3. 
Thorax: As in No. 3, but the ground colour is somewhat darker 
brown, and black scales predominate. 
Scutellum, pleure, halteres, metanotum: As in No. 3. 
Abdomen: Is a velvety black, with basal white ventral banding, 
the bands showing laterally, and gradually becoming more apical till 
the apex is white ventrally on the sixth segment. There is a yellow 
spot on the sixth and seventh segments of the venter. The white 
banding becomes dorsal on the seventh segment, but the lateral spots 
do not meet in the middle line. 
Legs: As in No. 3, but the hind tarsi are unfeathered. 
Ungues: First pair unequal, simple; second pair unequal, simple ; 
third pair equal, simple. The terminal segment of the tarsus of the 
first pair has two strong teeth inserted immediately behind the joint. 
