APPENDIX 
Length — 5*5 mm. Habitat — Gambia (Dutton). Time of capture — January. 
Observations — Described from a single female hatched from a larva taken in water in a rice field. 
It resembles the type except in regard to the colour of the thoracic scales, the thorax is 
characteristically ornamented, under a lens the first part (two-thirds) looks ashy grey, but more or less 
ornamentation, as described, ma}' be seen on careful examination, the paler anterior area is clearly marked 
off from the dark scaled posterior third. It is undoubtedly only a variety of the species I described as 
C. annulioris, from Salisbury, Mashonaland. 
In the structural figure of this species in the Monograph of Culicidae, fig. 127, p. 372, vol. 1^ I 
figured the palpi as three-jointed, the apical joint being characteristically swollen and truncated, this is 
really the penultimate joint, the apical joint was missing, I find the apical joint is long and thick. 
IX. Culex duttoni. Theobald 
Mono. Culicid. II, p. 318 (1901). Theo. 
A large series of this mosquito were taken at McCarthy Island and Bathurst Some were hatched 
out from larvae taken in a canoe on the foreshore, others from a tub of well water during October, 
November, December, and January. This is evidently a common West African insect along the coast ; 
I have not at present seen any from inland. It was found to be one of the hosts of Filaria nocturna by 
Dr. Dutton. 
This species is subject to considerable variation, both in size and in thoracic ornamentation. In some 
specimens brought back by Dr. Dutton the thorax shows no ornamentation at all, others have the thorax 
adorned as I described in the Monograph oj the Culicidae. 
X. Culex anarmostus. N. sp. 
Thorax dark brown to brown, with two darker median parallel lines on the denuded surface, covered 
with pale, dull golden, narrow-curved scales, showing faint longitudinal arrangement. Proboscis with a 
pale creamy band. Abdomen brown, with curved basal white bands. Legs brown, with faint apical and 
basal pale banding. Ungues equal and simple. 
9 . Head brown, with narrow-curved, pale, creamy-grey scales, brown upright forked ones and 
small flat white ones at the sides, and whitish curved ones round the eyes. Proboscis brown, with a 
median pale band very distinct beneath ; palpi black, with a few white scales ; clypeus bhck ; antennae 
dark brown, basal joint testaceous. Thorax brown to almost black, covered with narrow golden curved 
scales somewhat paler behind, to some extent arranged longitudinally ; scutellum pale brown, with pale 
narrow-curved scales ; metanotum deep brown ; pleurae pale brown and cinerous, with a few patches of 
grey scales. 
Abdomen deep brown, with curved white to creamy basal bands ; first segment nude, save for 
two median patches of black scales ; border-bristles pale ; venter white, with narrow apical border of 
brown scales. 
Legs brown ; femora pale ventrally, apex of tibiae white, base and apex of metatarsi and first two 
tarsals pale banded, also a white knee spot on the hind legs ; femora and tibiae bristly ; ungues equal and 
simple ; hind tibiae about the same length as the hind metatarsi. Wings with brown scales, those on 
the third and fifth being the darkest ; first submarginal cell longer and a little narrower than the second 
posteiior cell, its base a little nearer the base of the wing than that of the latter, its stem half the length 
of the cell ; stem of the second posterior about two-third the length of the cell ; posterior cross-vein about 
its own length distant from the mid cross-vein. The medium vein scales of the third, fifth, and. to some extent 
the lower branch of the second fork-cell, rather larger than in most Culex, and very dark. Halteres pale. 
