274 
A Monograph of Culicidae. 
second posterior cell; the supernumerary and mid cross-veins 
nearly in a straight line. 
Length .—8 to 8*5 mm. 
Habitat. —Whydah, W. Africa; and Delagoa Bay. 
Observations .—This species is closely related to 31. alternans , 
Westwood, but differs in the leg markings, the presence of seven 
instead of eight pale spots on the wing fringe and in the 
ornamentation of the wings, there being no yellow patch on the 
costa and no white band running across from it to the fourth 
long vein. 
It has also a much greater preponderance of white scales, 
w r hich give it a curious mouldy appearance, much more striking 
than in 31. alternans. The specimen bears a label with the 
following: “ A specimen from the Swan River in the Berlin 
Museum, mentioned by Karsch (Ent. Uachr. 1887, p. 26), is 
either identical with or closely allied to this species. E. E. A. 
9 iii. 1897.” The specimen from which this description is taken 
came from Whydah, and the register of the Museum shows it 
was “ collected by Eraser, and purchased in 1853 from 
Cummins:.” 
3. Mucidus Africanus. n. sp. 
(Fig. 140, PI. XXXV. and PI. E.) 
Thorax dusky greyish-brown with shaggy tomentum ; abdomen 
dark brown, with median and lateral patches of long shaggy 
white scales on the first few segments, the apical segments being 
mostly white scaled ; legs with the femora mostly dark scaled, the 
tibiae deep black on the basal half or more, white on the apical 
part; metatarsi and tarsi ochraceous, scales smaller, making 
them look nude on the fore and mid legs. Ungues equal, thick, 
serrated (Fig. 80). Wings with only five pale spots on fringe and 
with apex of the veins deep blackish. 
$ . Head brown, with shaggy white twisted scales, some 
spatulate, especially forming a white median line; upright 
forked scales numerous, jet black, much wider apically than in 
other species of this genus; a narrow pale border round the 
eyes and golden-brown bristles projecting forwards between 
them ; antennae yellowish-brown, with narrow deep brown bands 
at the verticils, basal joint with a dense tuft of white scales on 
the inside; palpi densely clothed with scattered white and jet- 
black scales; eyes black. 
