MOSQUITOS OF Till': PALAEAKCTIC REGION. 337 



Dr. Laniborn found the lai'vae in mnddy pools in company witli those of 

 Anopheles pundibasis. 



Distribution. — Japan (Tokio, Yamada, a series presented by the collector to the 

 British Museum in 1915 ; Nagasaki, Lamborn). 



7. Culex quasigelidus, Theobald. 



Culex qtiasigelidus, Theobald, Mon. Cul. iii, p. 181 (1903) ; Edwards, Bull. Ent. 

 Res. ii, p. 258 (1911). 



This is one of the most distinct members of a rather large group of tropical species, 

 which Theobald included in his genus Lcncomyia. The leg markings are distinctive, 

 but are not at all unlike those of the Old World species of Liitzia, especially L. tigripes, 

 of which C. quasigelidus has been taken to be a variety, though in reality it is very 

 different. The larvae, like many others with long siphons, live in weedy pools ; 

 they are very similar in structure to those of the other members of this group. 



Distribution. — Widely spread in the Ethiopian region, occurring in Madagascar, 

 and spreading northward by the Nile valley as far as Alexandria. 



8. Culex bitaeniorhynchus, Giles. 



Culex bitaeniorhynchus, Giles, J. Bombay Nat. Hist. Soc. xiii, p. 607 (1901) ; 

 Edwards, Bull. Ent. Res. iv, p. 231 (1913). 



The wing-scales of this species are unusually broad for a Culex. and on this 

 account Theobald placed it in the genus Taeniorhynchus, with which it has really 

 no connection. Usually the pale scales on the wings are almost as numerous as the 

 dark ones, at least in the female, but a variety occurs in which they are comparatively 

 few and scattered. The femora and tibiae are also very much mottled. The pale 

 bands of the abdomen are very variable in width ; they may be very narrow, or the 

 abdomen may be almost all pale. The species is semi-domestic, the larva often living 

 in polluted water. 



Distribution. — Throughout the Oriental region ; occurring also in Japan and North 

 Australia. A variet}^ differing slightly in the male hypopygium, is widely spread 

 in Africa. 



9. Culex sinensis, Theobald. 



Culex gelidus var. sinensis, Theobald, Mon. Cul. iii, p. 180 (1903). 

 Leucomyia sinensis, Theobald, Mon. Cul. v, p. 313 (1910). 

 Culex sinensis, Edwards, BuU. Ent. Res. iv, p. 231 (1913). 



This is at first sight very much like C. bitaeniorhynchus, but differs in the much 

 narrower and entirely dark wing-scales, and very considerably in the male hypopygium. 

 Apart from this, the femora and tibiae are less mottled, the pale scales which are 

 present tending to be aggregated into small dots, though these are not nearly so 

 conspicuous as in C. bitaeniorhynchus. 



Distribution. — ^Widely spread in the Oriental region, and, like the last species, 

 occurs also in Japan (Tokio, Yamada), but is not known from Australia or Africa, 

 where it seems to be represented by allied but distinct species. 



10. Culex mimetlcus, Noe. 



Culex mimeticus, Noe, Bull. Soc. Ent. Ital. xxxi, p. 240 (1899). 



A very interesting species on account of the spotted wmgs, the markings com- 

 prising three pale ochreous areas on the costa, which extend on to the first vein. 



