APPENDIX 
Vll 
X. Culex decern. Nov. sp. 
(Fig. 5, PL I) 
Thorax deep-brown to black with chestnut-brown scales ; abdomen almost black with 
basal uniform white bands on the third to fifth segments, which widen out prominently on the 
sixth and seventh to form clear lateral spots. Legs dark-brown unhanded. 
9 . Head almost black with small narrow curved creamy scales, and numerous dark upright- 
forked scales, quite black in some lights, the pale scales form a distinct line round the eyes ; 
clypeus dark-brown ; palpi deep-black ; antennae dark-brown with black verticillate hairs and pale 
pubescence ; proboscis deep bronzy-brown. 
Thorax black, deep-brown in some lights, witli very narrow curved bright chestnut-brown 
scales, rather paler in front, two dark median parallel lines show on the denuded surface ; bristles 
deep-brown, especially long and thick over the roots of the wings ; scutellum brown with very 
small narrow curved pale scales, seven bright-brown chaetae to the mid lobe ; metanotum brown ; 
pleurae ochraceous and slatey grey, with two patches of white scales, and an elongated patch just 
over the first two pair of legs. 
Abdomen covered with deep blackish-brown scales, the first segment dull ochraceous with 
two median patches of dull-black scales and long pale hairs, the second to fifth segments with 
basal white bands, in the fifth the band spreads out a little laterally, on the sixth and seventh the 
band is rather broken in the middle but much expanded laterally, the eighth segment mainly 
white ; border-bristles longest at the sides. 
Legs brown, unhanded, coxae to base of femora pale, venter of femora grey, remainder 
deep-brown, femora, tibiae and metatarsi, especially of hind legs spiny ; ungues small, equal, 
curved, simple. 
Wings with the veins with typical brown culex scales ; first long vein rather bent about 
half way along the wing ; first submarginal cell longer and just slightly narrower than the second 
posterior cell, its base nearer the base of the wing, its stem equal to about one-third of its length ; 
stem of the second posterior cell equal to about half the length of the cell ; posterior cross-vein 
nearly twice its own length distant from the mid cross-vein ; halteres with ochraceous stem and 
fuscous knob. 
Length 5mm. 
$ . Palpi all deep-brown to dull-black, just a trace of a narrow pale band near the base, 
the apical joint a little longer than the penultimate joint, acuminate, the two last joints with 
numerous blackish hairs, short and dense on the under surface only, a few also at the apex of the 
antepenultimate joint, the remainder with short, pale hairs all on the ventral surface, densely scaled 
below ; the palpi are longer than the proboscis by the last joint and the apical third of the penul- 
timate joint ; proboscis dark-brown, apex testaceous ; antennae grey, with deep-brown bands and 
brown plume-hairs. 
Thorax as in the 9 ; abdomen narrow, ornamented as in the 9 • Legs unhanded, traces 
of a pale knee spot ; tore and mid ungues unequal, uniserrated ; hind ungues small, equal. 
Length. — 4*5 mm. 
Habitat. — Bonny. 
Time of capture. — May. 
Observations. — Described from a single $ and 9 m the collection. The abdominal band- 
ing of the seventh and eighth segments expanding laterally, serves as a good means of identifying 
it at a glance. 
