Genus Culex . 
7 
Observations. —Dr. Lutz sent one perfect specimen of this 
insect, which he calls the Small Day Mosquito. The handing of 
the hind legs only, and its method of banding, forms a character 
by which it can be told from other mosquitoes I have seen; the 
ornamentation of the head resembles very closely Culex caecus, 
mihi, but the leg banding differs, and there are no teeth on the 
ungues of the 9 as in that species. In the single specimen sent 
by Dr. Lutz the first abdominal segment is very peculiar in form, 
but I am not sure if this is a specific character or a deformity ; 
it looks, however, in the specimen, quite natural. This is the only 
South American form I have seen that in any way answers 
to Fabricius’ Culex cingulatus, which it probably is. Fabricius’ 
specimen evidently had a rubbed abdomen, hence it is described 
as yellowish. Arribalzaga does not mention C. cingulatus in his 
work. Other specimens are in the collection labelled Lower 
Amazons (Austen). 
Fabricius’ description of Culex cingulatus is as follows :— 
“ Brick-red, with the haustellum and hinder tarsi ringed white; of 
the size of C. pijoiens, entire body brick-red. Head reddish-yellow; base 
of the antennae ferruginous, with silky yellowish hairs; proboscis 
yellowish-brown at the tip; palpi brown, the root of each joint white. 
Thorax bright ferruginous ; pleurae yellowish ; abdomen yellowish ; wings 
and legs yellowish ; tibiae with brown, variegated with white, tomentum, 
tarsi brown, with each joint white at the base; apex of front tarsi 
wanting, but base of remaining joint is white banded. About three 
lines (German).— S. America.” 
Fabricius describes a $, and points out that the hind tarsi 
are white banded; the other legs seem to have been imperfect. 
The type is in the Royal Museum, Copenhagen. 
It will at once be said that the species here described is not 
C. cingulatus , because the banding of the legs involves both sides 
of the joints. In some specimens the banding scarcely does so ; 
the apical banding would pass unnoticed with a hand-lens, but 
can easily be seen in different degrees by microscopic examina¬ 
tion. Faint traces of banding may sometimes be seen in 
C. fatigans, so that it is possible Fabricius’ species was no other 
than C. fatigans , but more probably the one described here. 
