72 
A Monograph of Culicidae. 
Le^s; coxa and trochanter dark grey, flecked with white scales. 
Femur and tibia thin, white scales predominating over black ; a few 
white flecks on black metatarsi; white bands at apex of metatarsus, 
and all tarsi, except, in the fore and middle legs, the third. Tip of 
last tarsus white in all legs. 
Wing costa black; there are three main white spots, which are 
small; a fourth still smaller at the apex, and two white dots at the 
base. First longitudinal vein black, one white dot at base, a white 
spot under each of the four remaining costal spots, mostly smaller 
than the latter, and a minute group of white scales in the two long 
black stripes. Second longitudinal vein black, a white spot at the 
fork, and a large white patch on posterior branch of first fork-cell. 
Third vein mostly white, with a black spot at each end; fourth vein 
black, a white spot near the fork, which also is white, and a large 
white spot on each branch of the second fork-cell and at the tip of 
each branch. Fifth vein mostly white, a black patch on the stem and 
at fork, two on upper and one on lower branch. Sixth vein white, 
with three black spots. On the second and fourth veins white scales 
are interspersed with black in some specimens. Fringe black, with a 
white spot opposite termination of all branches of veins except the 
second. 
Length of detached wing. —4*5 mm. 
Principal variations in nine $ ’s are :—Very few white scales at 
fork of second longitudinal veins; the stem of the fourth vein almost 
all or entirely white ; and three white spots on the first vein additional 
to costal spots, instead of two. 
The larva determined on three specimens, drawn from one pre¬ 
served, and two living. 
General aspect: large, deeply pigmented. 
Antennae: no branched hair on shaft, but a prominent curved 
spicule about one-third of length from base, on antero-external aspect; 
spines equal; terminal hair divides immediately into three. 
Frontal hairs: variations as shown in Plate XXI., fig. a. The 
spicular branches on the anterior median are difficult to discern with 
low powers. 
Palmate hairs : absent from thorax, very fine and rudimentary on 
first abdominal segment; rudimentary, but functionally active on 
second abdominal segment; well developed and well defined with 
broad leaflet on the third to seventh inclusive. Average radius 
O’108 mm.; leaflets 15-18; relation of filament to length of filament 
and leaflet as 0*20-1, maximum 0*24, minimum 0*14; in the latter 
there is really no filament at all. 
Habitat. —Found in small springs at sea-level in one neighbour¬ 
hood only. 
Season. —Cold weather. 
Belation to malaria. —No evidence of any.” 
