Genus Aedes. 229 
Habitat. —Ontario, Canada (Walker) (66); Massachusetts 
(Osten-Sacken). 
Time of capture .—June, July, and September. 
Observations .—Several females of this species received from 
E. M. Walker, who states that it is common on the borders of a 
marsh at High Park, Toronto. 
As far as Osten-Sacken’s description of Aedes fuscus goes, the 
Canadian species answers to it in all respects, but his description 
is very meagre. Osten-Sacken described Ae. fuscus in “ Bull. 
U.S. Geological Survey,” iii., p. 191 (<£ and 9) from Cam¬ 
bridge, Massachusetts, having bred the species from larvae which 
he found in a pool, with those of several species of Culex. The 
larvae and pupae behaved just like those of Culex , but attracted 
attention on account of their smaller size. 
It can easily be identified by the head ornamentation, as 
shown in the figure. The £’s are worn, and show no abdominal 
ornamentation, but the broad flat head scales are very distinct. 
This is the only true Aedes sent in any numbers from abroad. 
Two $’s have more numerous golden-brown curved scales in 
the middle of the head than the rest, but the broad flat dark 
scales are still very prominent and distinct; some specimens 
have the basal abdominal banding more distinct than others, and 
with lateral expansions, but these are only varieties. 
2. Aedes obscurus. Giles. (Meigen MS.) 
(Hd.Bk. Gnats or Mosq. p. 348. Giles (1900).) 
Description of the type in the Jardin des Plantes by Lt.-Col. 
Giles :— 
“ A very uniformly coloured and dusky species; thorax and head 
dark brown, with the villosity of the same tint; the abdomen not very 
dark brown, with darker hinder borders to the segments; tarsi brown, 
unbanded ; wings hyaline; first sub-marginal cell is narrower, but only a 
little longer than the second posterior and the stems of both are very 
long, that of the first sub-marginal being a trifle the longer; the super¬ 
numerary and middle transverse veins meet each other in an open angle 
pointing outwards; of the two the middle being much the longer, while 
the posterior transverse is longer still and placed a little internal to it.” 
