Genus Culex . 
57 
sub-marginal cell considerably longer but the same width as the 
second posterior cell, more than three times longer than the stem, 
its base nearer the base of the wing than that of the second 
posterior cell; second posterior cell with its stem about half the 
length of the cell; posterior cross-vein about twice its own 
length distant from the mid cross-vein. Halteres with pale 
stem, with a dark line down one side, and a fuscous knob. 
Length. —2*5 to 3 mm. 
$. Head with pale curved creamy scales in the middle, 
flat dusky and then dirty-white ones at the sides, numerous 
black upright forked scales as in the female, but 
leaving a bare line in the middle of the head, 
and more dense on each side of it; palpi and 
proboscis blackish-brown, with steely metallic 
reflections in some lights ; palpi not quite as long 
as the proboscis, the antepenultimate joint much 
expanded at the apex; penultimate joint longer 
than the apical joint; antennae banded dark 
brown and dirty-white ; plumes of antennae and 
palpi blackish-brown. 
Ungues of fore and mid legs unequal, both 
with a tooth, that of the smaller very pointed 
and near the base; hind ungues equal. 
Length. —2 • 5 to 3 mm. 
Habitat. —Jamaica (Hr. Grabham, 8, 2, 1900, 
and F. Cundall, 7, 12, 1899); Trinidad (Urich). 
Time of capture. —November and December. 
Observations. —A small dark mosquito, which 
is clearly distinct, and which has very character¬ 
istic wing scale-ornamention, which should at Fi =- 177 * 
once enable the collector to identify it. The Culex atratus - n - sp - 
.... . Male palpus, 
swollen proboscis in the 9 1S also a marked 
character; so also are the swollen apices of the tibiae. Dr. Grabham 
states that it is the usual swamp form. “ I strongly suspect,” he says, 
“ the male sucks blood, but have not made definite observations yet.” 
(Sign attached to label X.) Taken by Dr. Grabham (who appends 
the following note) at Ferry Swamp, in the larval stage: “ from stag¬ 
nant algae-containing permanent pools. The larvae feed on algae.” 
In a recent letter Dr. Grabham writes : “ The small swamp 
form, a terrible pest in local mangrove swamps; the minnows do 
not seem to destroy this species.” The larvae and pupae received 
from him will be described in Yol. III. 
