^5 
Culex nemorosus, Mg. 
Plate 7. 
This is another sylvan species, which, according to Theobald 
[op. at., Vol. II. (1901), p. 83), is common in England but has never 
been known to enter houses or outbuildings. The author referred to 
states that he has received specimens from " a great variety of places 
such as deep woods, the borders of lakes, along ditches, cuttings, etc." 
The British specimens in the Museum collection are from various 
localities between and including Torphins, Aberdeenshire, N.B., and 
the New Forest, Hants ; the species was met with by the writer in the 
woods near Brinklow, Warwickshire, on June 30th, 1902. The time 
of flight is from May to August. Theobald writes {loc. cit., p. 84) : — 
" This wood gnat varies very considerably both in size and colour. I 
have seen the females only 6 mm. long, whilst others are 9 mm." 
The geographical range of C. nemorosus includes the whole of 
Europe, from Lapland to Italy, and also extends to Canada. 
Culex pipiens, Linn. 
The Common Gnat. 
Plate 8. 
The Common Gnat is generally distributed in the British Islands, 
and may be met with in houses practically throughout the year. 
Theobald writes {op. cit., Vol. II. (1901), p. 135): — "The females 
hibernate in cellars and outhouses, and appear mostly in March and 
April, but do not, as far as my observations go, deposit their eggs for 
some little time. No males are to be found in the early part of the 
year, the females having been fertilised by the males in the previous 
autumn. I have known this gnat active in numbers well into 
November in England, and they occur during the winter in houses." 
