110 Dr. C. P. Alexander on African Crane-flies 
the mesonotal preescutum entirely confluent behind, the 
ground-colour restricted to yellowish areas at the humeral 
angles ; scutellum dusky, the lateral sclerites darker. 
Wings with a dusky brown tinge, the costal cell pale brown, 
the subcostal cell dark brown; veins dark brown. Veuation: 
cell lst M, small; fusion of Cu, and M rather extensive, 
Cu, breaking away a short distance before the fork of M. 
Abdomen with the first segment black ; second segment 
orange-yellow with nearly the distal half black ; segment 
three black with only the basal third obscure orange-yellow ; 
segments four and five reddish yellow, the margins narrowly 
blackened ; segments six to eight black, the hypopygium 
obscure reddish chestnut ; ninth tergite darker laterally. 
Lateral lobes of the tergite provided with conspicuous black 
tubercles along the outer margin. 
Hab. Gold Coast. 
Holotype, g, Aburi, 1912-1913 (W. H. Patterson). 
Paratopotype, 3, teneral. 
Type in the collection of the British Museum (Natural 
History). 
Nephrotoma leonia, sp. n. 
Antenne with the scape orange; flagellar segments 
moderately elongated ; head orange, the occipital mark 
small, indistinct ; mesonotum yellow, the prescutum with 
three conspicuous black stripes ; scutum almost entirely 
black ; pleura whitish with a very couspicuous black area 
on the mesepisternum ; halteres dark brown ; wings grey- 
ish, cell Se brown ; macrotrichiz in the end of cell &;; 
abdomen orange, the tergites ringed caudally with black ; 
hypopygium orange. 
Male.—Length 10 mm. ; wing 10 mm. 
Frontal prolongation of the head shiny yellow, nasus 
distinct ; palpi dark brown, paler at the base. Antenne 
with the scapal segments orange, the flagellum dark brown- 
ish black ; flagellar segments only moderately elongated. 
Head orange ; ; occipital mark small, oval, rather indistinct ; 
vertical tubercle entire. 
Pronotum light yellow, the sides scarcely darker. Meso- 
notal preescutum yellow with three conspicuous black stripes, 
the lateral stripes strongly outcurved to the dorso-pleural 
membrane; scutum shiny black, only a small median area 
immediately behind the suture paler ; scutellum brown, the 
sides black ; postnotum pale yellow, the posterior margin 
