224 
A Monograph of Culicidae. 
Genus 16.— AEDES. Meigen. 
(Dipt. Besclir. i. p. 13 (1818), Meigen; Suit, a Buff. i. p. 37 (1834), 
Macquart; Hist. d. Ins. ii. p. 454 (1845), Blanch.; Dipt. Scand. (1850), 
Zetterstedt; Ins. Brit. Dipt. iii. (1851), Walker; Fauna Austr. ii. 
(1864), Sckiner; Bull. Soc. Ent. Ital. (1896), p. 299, Ficalbi.) 
This genus, which has always contained a small number of 
species, has recently been further reduced by the formation 
of the following genera: Haemagogus , Williston, Uranotaenia, 
Arribalzaga, and Aedeomyia, and Wyeomyia, mihi. 
The genus, as it now stands, contains mostly dull-coloured 
mosquitoes of small size, and at present occurs in Europe, Africa, 
and North America; the few species differ very much in appear¬ 
ance from the three genera mentioned above, and could not be 
confused with them, in spite of the palpi being similar in £ and 
9 , the essential character of Meigen’s genus Aedes. 
The characters of the restricted genus Aedes I make as 
follows:—• 
Head clothed with both flat broad scales and narrow curved 
ones over the occiput, the former always predominating, the 
latter sometimes nearly absent; thorax with narrow curved 
scales ; scutellum usually with four bristles to the mid lobe ; 
palpi short, apparently two-jointed in both $ and 9 ? always 
much shorter than the proboscis, rounded apically, scaly, and 
with a few bristles and hairs; scutellum with narrow curved 
scales ; antennae fourteen-jointed, plumose in the $, pilose in 
the 9 5 the second joint often rather swollen; proboscis about 
the length of the antennae. Wings rather long, the scales much 
as in Culex , the lateral ones long and slender; the first sub¬ 
marginal cell generally longer and narrower than the second 
posterior cell, both cells of moderate length. Legs with the 
ungues of the 9 both. equal and toothed or simple, of the £ 
unequal, the larger toothed, the small toothed or not. 
The essential characters are :— 
(i) the palpi short in both sexes; 
(ii) the palpi two-jointed; 
(iii) the wings clothed with ordinary scales as in Culex; 
(iv) curved scales only on thorax and scutellum. 
In regard to the number of joints in the palpi there is some 
difference of opinion. Ficalbi says they are two-jointed, with a 
