Genus Culex . 
83 
brown, rather paler at the base, the last joint swollen, penulti¬ 
mate joint slightly thinner, a little longer, and very hairy ; 
antepenultimate joint with a tuft of hairs 
and a few short black bristles at the 
swollen apex; very slightly longer than 
the proboscis. Abdomen narrow, densely 
hairy, with white basal bands as in the 9 j 
last segment with many white scales; 
genitalia with long thick basal joints, 
thin long claspers, and a long thin pointed 
process from the inside of each basal 
joint. Fore and mid ungues unequal, 
both uniserrated ; hind equal, uniserrated. 
Wings with the first sub-marginal cell 
longer and much narrower than the second 
posterior cell, its stem much longer than 
the cell, and its base nearer the apex of 
the wing than that of the second posterior; 
second posterior cell very short and broad, 
its stem half as long again as the cell: Fore,mid and hind of the ; 
mid cross-vein longer than the super¬ 
numerary, about the same length as the posterior cross-vein, 
which is distant rather more than its own length from the mid 
cross-vein. 
Length .—6 to 8 mm. 
Habitat .—Europe, from Lapland to Italy; Canada. 
Time of appearance .—May, June, and August in Europe; 
June and July in Canada. 
Observations .—This large mosquito is subject to much varia¬ 
tion, and has hence been described under a variety of names. 
After carefully studying a number of specimens I have come 
to the conclusion that it also occurs in North America under 
Walker’s name, C. provocans. It thus has a wide distribution; 
this is all the more strange when we know it to be a sylvan 
species, never entering human habitations. 
The ungues of both $ and 9 are marked, and, together with 
the £ genitalia, deep black legs with prominent knee spots, and 
golden-scaled thorax more or less ornamented, should at once 
isolate it from other species. Nemorosus is a common gnat in 
England, and so far has never been recorded in houses, out¬ 
houses, or privies, where we so frequently find the large Gulex 
annulatus. 
