GENUS ANOPHELES 309 



to II, but subdivided in each case on tlie latter by a black dot ; 

 there are also three prominent interruptions on the basal half, 

 but only the outermost of these involves II, the two basal ones, 

 though large, usually affecting the costa only ; the remaining long 

 veins are about equally divided into black and white portions, and 

 the dark fringe is white at the tip of the wing and at all the longi- 

 tudinal junctions. Tarsi with minute but distinct yellowish 

 rings on the articulations. Thorax slaty-brown, with a dusky 

 median line. Abdomen black, nude, and with long golden hairs. 

 Femora and tibiae curiously mottled. 



? . — Head brown, clothed with upright, rather broad, white scales in 

 front and on the occiput, similarly formed black ones at the sides, and a 

 tuft of white hairs projecting forwards ; antennse pale brown, with pale 

 pubescence, basal jomt bright brown, with white scales, which also 

 extend on to the next few joints ; palpi black-scaled, apical joint 

 yellowish-white, and the apices of the two preceding also banded white, 

 the bands being narrow ; clypeus pale brown ; proboscis black, thin, pale 

 at the tip, as long as the palpi. The details of the wing-decoi'ation 

 vary somewhat. 



$ . — With the wing much lighter, the white-scaled portions prepon- 

 derating ; antenniB yellowish-brown with darker verticils ; palpi dusky, 

 with numerous pale scales, swollen at the last two joints, apical joint 

 chiefly white, the next with a narrow pale apical band ; the hair tufts 

 brown, a little longer than the proboscis ; proboscis thin, dark brown, 

 yellow at the apex. Abdomen narrower than in the J , dark and 

 pale yellowish-brown and silvery-grey, a median brown dorsal line, a 

 paler lateral line on each side, more or less pale basally and with very 

 long hairs ; genitaha with yellowish scales. Ungues of fore legs un- 

 equal, the larger one twice-toothed. Length. — 2'5 to 3'5 mm. <? ; 3 to 

 4'5 mm. J . 



Habitat. — Freetown, Sierra Leone, Bonny, Lagos, Salisbury 

 Mashonaland, Central Africa, Mauritius, Cafraria. 



Appears to be the commonest and most widely distributed of African 

 species, though not so common as An. fwnestus in Central Africa. It 

 has been proved to be capable of transmitting human malaria. 



19. ANOPHELES CINEREUS, Theob. (Monog. I, p. 161). 



Plate X, fig. la. Wing of $ ; lb, Scutellum ; Ic, Basal portion of ? 



antennae. 



"Wing with the costa black, with an apical pale spot, but 

 having no basal dots, the intervening portion interrupted by three 

 prominent white spots; the long veins white at the base, but 

 elsewhere made up of alternating black and white lengths, the 

 former preponderating ; fringe uniformly brown, except at the 

 tip, where there are two lighter patches. Tarsal joints apically 



