iai 
Genus A nopheles. 
attack human beings during the day.” I have not seen any 
A. costalis from Mauritius. 
There is some little variation in this species; those from 
Bonny are much darker and larger than those from Freetown, 
whilst those from Central Africa seem to have rather longer 
wings. 
The spots on the wings vary slightly, those on the first 
longitudinal varying as follows :— 
Fig. 42. 
Variations in the markings on the costal border in A. costalis, Loew. 
but in all cases the spots under d and e are broken up and not 
complete under the costal spots as in A. superpictus. 
The chief character by which costalis can be identified is, 
however, the curious mottled appearance of the femora and 
tibiae. 
From A. tessellation, A. maculata , &c., it can be told at once 
by the absence of metatarsal banding. 
16. Anopheles cinereus. n. sp. 
(Fig. 7, PI. II.) 
Thorax with a broad grey median line with silvery-grey 
liair-like scales, dark brown on each side. Abdomen dark brown, 
the apical borders of the segments rather darker than the rest, 
covered with dull golden-brown pubescence. Legs long, thin, 
black, bases very pallid, knee spots and apices of tibiae pure white, 
apices of metatarsi and tarsi narrowly yellow banded on the fore 
and mid-legs. Wings with three white spots on the black costa ; 
apex mostly yellowisli-white ; wing field mottled with black and 
yellowish-white ; fringe brown with yellow patches. 
9 . Head black, an ashy-grey border round the eyes, covered 
with thick, black, upright forked scales, except two white 
patches of them on each side of the middle line in front; a small 
VOL. i. M 
