512 GNATS OR MOSQUITOES 



and apex of the next yellowish-white, and with narrow apical pale 

 bands on the next two joints ; antennae dark, unhanded, the basal and 

 the next two or three joints with numerous white scales. Length. — 

 About 4 mm. 



Habitat. — The Gambia Valley, West Africa. 



25a. ANOPHELES METABOLES, Theob. (" R.S., M.C."). 



Wing with the costa dark at the base, pale at the apex, with 

 three whitish interruptions of the dark costa (involving aux. and 

 I), and two large basal dots ; of the former, the two outer are 

 larger than the intervening dark portions ; the junction of the 

 largest dark and light spots is opposite the cross-veins, while 

 the innermost are of small size ; remaining long veins mainly 

 whitish, with subterminal and a few other black dots ; internal 

 fringe with broad white bands at the longitudinal junctions. 

 Tarsi, with narrow but distinct yellowish bands on the articu- 

 lations. Thorax, dark brown-grounded, densely clothed with 

 whitish scales, but without any prominent markings. Abdomen 

 dusky, unhanded, fairly densely covered with brownish-white 

 scales, which, however, are nowhere accumulated into tufts. 

 Tibiae and femora, irregularly mottled with dark brown and 

 golden scales. 



Head dark brown, witli a fairly dense frontal tuft of hairs, which look 

 parti-coloured in certain lights ; scales of nape white, those of the flat- 

 scaled lateral patches rather dark ; antennte banded in most lights, with 

 scanty verticils, and clotlied almost to the end with white scales, inter- 

 mixed with a few black ones ; palpi black, very hirsute, especially at the 

 base ; a narrow white ring on the second articulation ; and the last 

 two joints whitish, but for a dark band on the base of the last joint. 

 Hal teres with black knobs, showing dense patches of large creamy scales. 

 Length. — About 3 mm. 



The details of the distribution of dark and pale patches have been 

 found to vary greatly, even in specimens reared from the same batch of 

 eggs, the portion of the spot which is placed on I, being either all dark or 

 variously interrupted with dark and light spots (riile fig. 51, 3a, 3b, 3c). 



Habitat. — Lahore, Punjab, India. 



29a. ANOPHELES CHRISTOPHERSI, Theob. ( ' R.S., M.C."). 



Wing yellow at the very apex, but black at the base, with 

 four yellow interruptions (involving aux. and I) less than half 

 the lengtn of the intervening black portions of the costa, and 

 placed at fairly even distances ; the external of the two middle 

 pale spots extends obliquely inwards over the cross-veins, and 

 the remaining long veins are variegated with black and yellow 

 lengths, the former preponderating towards the costal, and the 



