326 
.4 Monograph of Culicidae. 
scales in the middle of the mesonotum, which spreads out to 
form a patch in front of the scutellum, and also a more or less 
distinct lateral line on its posterior half. In Too Chow it is 
common in the native cpiarters (Rennie). 
Captain James, I.M.S., notes that the larva of this 
mosquito is large, and has a characteristic whitish woolly appear¬ 
ance. It rests perpendicularly to the surface, and further has 
very large and characteristic swimming fans. It breeds chiefly 
in pots and tubs of dirty water in the open and under trees. It 
is very rare to find the mosquito in houses, though it is not 
uncommon in woods. In a later letter from Hong Kong 
Captain James tells me he has taken this species in his tent.* 
Genus 11 .— CULEX. Linnaeus, 
(Liim. Syst. Nat. (1735), Linnaeus; Fn. Suee. 1890, pi. x. figs. 1-4 (1761), 
Linnaeus; Zweiflug. Ins. i. 1 (1818), Meigen ; Gen. Crust, et Ins. iv. 
256 (1809), et Hist. Nat. d. Crust, et d. Ins. xii. 284 (1802), Latreille; 
Dipt. Exot. 6 (1821), Wiedemann; Mem. Soc. d’Hist. Nat. de Paris, iii. 
(1827), Rob. Desvoidy; Hist. Nat. d. Ins. i. 33, 2 (1834), Macquart; 
Dipt. Exot. p. 29 (1838), Macq. ; Ins. Brit. Dipt. iii. p. 243 (1851), 
Walker; Brit. Ent. xii. 537 (1835), Curtis; Dipt. Scand. (1850), 
Zetterstedt; Fn. Austr. ii. (1864), Schiner; Dipt. Neer. 323 (1877), Van 
der Wulp; Bull. Soc. Ent. Ital. xxvi. 315, et Revis. Sist. d. fam. d. 
Culicidae Europ. p. 224 (1896), et Yenti Spe. d. Zanzare Ital. p. 98 
(1899), Ficalbi; Dipt. Arg. p. 57 (1891), Arribalzaga; Trans. Linn. Soc. 
N. S. Wales, p. 1724 (1889), Skuse.) 
The genus Culex of Linnaeus contained all the gnats in 
which the 9 palpi are short and the £ long, until Arribalzaga in 
1891 separated off certain genera ( Hetercnycha , Janthinosoma , 
Ochlerotaiiis , and TaeniorJiynchus). 
This, the only essential character of the old genus, necessitated 
placing an enormous number of species in one group, and many 
of those species present very marked differences. 
Such a large number of insects grouped together is very 
embarrassing when trying to identify a species. I therefore 
sought for some character or group of characters by which the 
old genus Culex could be split up; ungues and palpi are so 
varied in closely-related species, and the joints of the latter so 
very difficult to see in fresh specimens, that I at once discarded 
* Lieut.-Colonel Giles lias two fresh species in the genus. 
