Genus Anopheles. 
11 
Anopheles .bifcjrcatus. Linnaeus (1758). 
i) 
Culex bifurcatus. Linnaeus (1758). 
Culex trifurcatus. Fabricius (1794). 
Culex claviger. Meigen (1804). 
Anopheles villosus. Robineau Desvoidy (1828). 
Anopheles walkeri. Theobald (1901). 
Syst. Nat., ed. x., 603, 2 (1758); Mono. Gulicid. L, 195, 199 (1901), III., 19 
(1903), IV., 36 (1907), Theobald. 
England, Wales, Scotland ; France ; Hungary ; Italy ; Den¬ 
mark ; Russia ; Holland • Germany ; Austria ; Norway, etc. ; 
Canada and United States. 
Notes and observations .—The following interesting observations 
have been sent by Mr. Burton from Shrewsbury :— 
April 
21, 
1907. 
$ 
April 
23, 
1909. 
$ 
April 
27, 
1909. 
? 
May 
3, 
1909. 
$ 
May 
6, 
1908. 
$ 
May 
11, 
1906. 
$ 
May 
11, 
1909. 
6 
May 
18, 
1909. 
6 
May 
24, 
1909. 
? 
May 
28, 
1909. 
$ 
June 
4, 
1909. 
$ 
June 
16, 
1909. 
$ 
June 
19, 
1907. 
$ 
June 
27, 
1909. 
$ 
J une 
30, 
1909. 
$ 
July 
5 , 
1909. 
$ 
July 
12, 
1906. 
S 
July 
21, 
1908. 
S 
July 
26, 
1906. 
$ 
Sept. 
8, 
1909. 
$ 
Sept. 
14, 
1909. 
i 
Sept. 
13, 
1909. 
$ 
Sept. 
21, 
1909. 
6 
Sept. 
26, 
1909. 
$ 
Sept. 
29, 
1909. 
$ 
Oct. 
9 
1909. 
S 
In sandstone quarry ; 5.30 p.m. 
In sandstone quarry; 5.30 p.m. 
Biting in sandstone quarry ; 6.30 p.m. 
Swarming in quarry woods ; 6.15 p.m. 
Swarming in sandstone quarry; 6.45 p.m. 
Swarming in sandstone quarry. 
Swarming in most of the woods. 
Swarming. 
With larval Trombidium. 
In sandstone quarry. 
Swarming in rookery. 
Swarming in sandstone quarry. 
Swarming by watercress pit. 
Swarming in most of the woods. 
Swarming in most of the woods. 
Swarming high up in fields by woods. 
Swarming end of sandy lane. 
Swarming. 
Swarming by watercress pit. 
Swarming end of sandy lane ; 6.30 p.m. 
Swarming over starch house field. 
Swarming high up over by let ditch. 
Swarming. 
Swarming by watercress pit. 
Swarming high up over bylet ditch. 
Swarming in withy bed. 
