19 
and the bite is somewhat annoying. It usually occurs on the wing at 
dusk I have taken this mosquito in the daytime by beating dense 
bushes where it seems to pass the day in North Wales." The same 
writer states that A. nigripes "does not appear to come indoors," but 
the Museum possesses a female which bit and sucked blood, and was 
taken by Mr. F. VV. Terry at Merton, Surrey, on June 6th, 1899, in a 
bedroom at night. According to Nuttall, Cobbett, and Strangeways- 
Pigg ('The Journal of Hygiene,' Vol. I., 1901, p. 12), in the British 
Islands Anopheles nigripes is much more rare than either of the 
other two species of the genus, although there is no difference in 
the distribution of any of them. Out of 156 British specimens of 
Anopheles from various localities, no fewer than 123 were Spotted 
Gnats [A. maculipennis, — Plate 4), 27 belonged to A. bifurcatus 
(Plate 3), and only six to the present species. 
The geographical range of A. nigripes is said to include Northern 
Europe and North America. 
Anopheles bifurcatus, Linn. 
Plate 3. 
This species, which occurs throughout Europe.from Lapland to Italy 
and the Mediterranean, is probably generally distributed in the British 
Islands, since it was recorded by Haliday from the north of Ireland, 
and the localities of the specimens in the Museum include Torphins, 
Aberdeenshire, N.B., and Penzance, Cornwall. According to Theobald 
{op. cit., p. 198) this mosquito makes its appearance in England in 
April and May ; a male and female were taken at Penzance by 
Mr. F. W. Terry on July 17th, 1901. Theobald writes that the 
female of A. bifurcatus attacks human beings, and is a very persistent 
blood-sucker ; " it is much fiercer than the more common A. maculi- 
pennis" or Spotted Gnat (Plate 4). The same author adds that he 
has found the species chiefly in the neighbourhood of woods, and that 
malarial parasites are known to develop in it in Italy. 
