240 A Monograph of Culicidae. 
with a few flat creamy-white lateral ones; a few large black 
bristles projecting forwards and inwards; antennae and palpi 
brown ; proboscis much swollen apically, jet black. 
Thorax with the mesonotum black, with elongated, narrow 
curved black scales and black bristles ; prothoracic lobes ochra- 
ceous, nude, with a few bristles; pleurae and the lower part of 
the sides of the mesothorax bright yellowish, with a few black 
scales ; scutellum ochraceous, with three patches of black narrow 
curved scales, showing as three dark spots, median lobe with six 
black bristles ; metanotum black. 
Abdomen black, covered with black scales, with small basal 
lateral white spots; first segment pale ochraceous, with two 
median patches of black scales and long golden hairs. Legs black, 
coxae and venter of femora pale ochraceous; femora swollen ; 
apices of the tibiae also swollen ; ungues small, equal, and simple. 
Wings with brown scales except the costa and first long vein, 
which are black scaled; fork-cells rather short, the first sub- 
marginal longer and narrower than the second posterior-cell, its 
base nearer the base of the wing, its stem about one-third the 
length of the cell ; stem of the second posterior nearly as long as 
the cell ; posterior cross-vein a little more than its own length 
distant from the mid cross-vein; bases of the wings bright 
testaceous. Halteres with bright ochraceous stem and fuscous 
scaled knob. 
Length.—5 mm. 
Habitat.—Para (Dr. Durham). 
Observations.—Described from a single 9. A very marked 
black and yellow to ochraceous species, the black and yellow parts 
of the thorax being very strongly defined. The curious swollen 
appearance of the apices of the femora and tibiae is also very 
noticeable. 
M&LANOCONION RIMUS. Theobald. 
Culex rima. Theobald. 
(Mono. Culicid. II., p. 327, 1901.) 
6. fPalpi entirely black; apical joint with black hairs; 
antennae with blackish plume-hairs. Thorax ornamented as in 
female, pleurae very pale grey ; abdomen. narrow, entirely black, 
unbanded and unspotted. 
Legs brown, coxae grey; fore and mid ungues unequal, 
uniserrated, the fore rather straight ; hind equal and simple. 
Length.—2°8 mm. 
