114 Dr. C. P. Alexander on African Crane-jlies 
The female is generally similar, but the abdominal tergites 
are regularly banded with orange-yellow and black, the 
caudal margin of segments two to seven being broadly black, 
the posterior bands scarcely attaining the lateral margins ; 
cell 2nd A of the wings longer and wider than in the male. 
Hab. Nyasaland. 
Holotype, 3, Mt. Mlanje, May 9, 1913 (S. A. Neave). 
B.M. no. 1918. 140. 
Allotopotype, ¢. 
Type in the collection of the British Museum (Natural 
History). 
Nephrotoma tigrina, Alexander (Portuguese East Africa), 
is generally similar to the present species, but has the 
frontal tubercle entire ; the antennze very much longer ; 
‘the wings more suffused with yellow, the wing-tip and r-m 
being strongly infuscated ; no macrotrichiz in cell R; ; cell 
2nd A longer ; details of the coloration of the body slightly 
different. 
Nephrotoma tricincta, sp. n. 
Occipital mark not distinct ; frontal tubercle indistinctly 
bifid ; mesonotal stripes black ; postnotum glabrous, knobs 
of halteres tipped with yellow ; wings greyish yellow, the 
tip and a cloud at r—-m brown ; a few macrotrichiz in the 
end of cell R;; abdomen orange; a brownish-black sub- 
terminal ring and two narrow bands at the ends of tergites 
two and three ; eighth sternite sparsely hairy, the margin 
with a small median tubercle that bears a pencil of hairs. 
Male.—Length 15 mm. ; wing 14°4 mm. 
Frontal prolongation of the head yellow ; a shiny brown 
spot at the base of the nasus; palpi pale brown, the last 
segment fading into yellowish. Antennz with the scapal 
segments ‘yellowish ; flagellum broken. Head orange ; 
occipital mark practically lacking, represented only by a 
slight, ill-defined, pale brown area ; frontal tubercle high, 
very indistinctly bifid. 
Mesonotum light yellow, the prescutum with three broad 
black stripes, the lateral pair bent outward at their anterior 
ends but not attaining the extreme lateral margin of the 
sclerites ; scutal lobes black ; scutellum dark brown ; post- 
notum pale with two large rounded dark brown spots at 
the posterior margin ; surface glabrous. Pleura very pale 
yellow, indistinctly variegated with reddish. Halteres brown, 
the extreme apex of the knobs yellowish.’ Legs with the 
cox and trochanters reddish yellow ; femora pale brownish 
