444 GNATS OR MOSQUITOES — CHAPTER XIII 



tion, C. (ocJderotatus) albifasciattts, Macquart. He appears, however, 

 not to have obtained a male specimen. Length. — About 5 mm. 



Habitat. — South America ; Eio de Janeiro, Buenos Ayres, Brazil, 

 New Amsterdam ; Jamaica. 



90. CULEX NIGRIPES, Zetterstedt. 



= C. impiger. Walker ; = C. implacabilis. Walker ; = C. incidens, Thomsou (?) 



(Ins. Lapp. (1838-40), Zetterstedt ; p. 292, " F. R." ; Brit. Mus. List, p. 7, 



Walker (= impiger) ; Eugen. Resa. Dipt. p. 443 (= incidens), Thomson.) 



Tarsi uniformly black. Thorax black, with ferruginous scales 

 and black bristles in front, and brown ones projecting over the 

 roots of the wings. Abdomen black, with deep fuscous scales 

 and basal white bands, which spread out laterally on the last few 

 segments in the $ ; entirely black in the S . Fore and mid 

 tarsal claws of ? , symmetrical and each with an extra tooth. 



Head dark brown, with deep golden-brown curved scales and upright 

 forked ones, and a small patch of pale scales on each side, a tuft of 

 brown bristles projecting forwards ; palpi and proboscis black, palpi of 

 5 with paler scales on the last joint, which is broad and flat; those 

 of ^ entirely black ; antennae black, basal jomt with dull ochreous 

 scales ; proboscis long. Pleurte black, with white and grey scales. Legs 

 black, including the coxae, but pale on the undersides of the femora. 

 Halteres pale, with darker knobs. Venter black, with an indistinct paler 

 median line. Length.— A-6 to 6 mm. 



Habitat. — Ai*ctic regions generally ; Lapland and Greenland, Alaska, 

 Hudson's Bay, Kindu Kush mountains, N.W. Frontier of India, at 

 13,500 feet ; California (?). It will be noticed that with the exception 

 of the Califoi'nian liabitat of the doubtfully synonymous C. incidens, all 

 the above records refer to intensely cold climates. 



9L CULEX SAGAX, Skuse (" S. A. C." p. 1744). 



Tarsi uniformly black. Thorax intense black, with golden- 

 brown, and pale, almost white scales, the latter especially before 

 and on the scutellum and at the sides. x\bdomen deep blackish 

 to violet-brown, with basal sinuous ochreous bands in the 2 , 

 which spread out laterally on the last two segments in the male. 



5 . — Head dark, with golden-brown scales and hairs : palpi black- 

 scaled ; proboscis black ; antennae black, nearly as long as proboscis ; 

 in the <? , black with grey lateral patches, his palpi yellowish, dark at 

 the extremity, with a pale band on the basal third. Pleurae dark 

 brown with four or live white patches. Bases of the legs brown, with 

 some pale scales ; femora pale ochreous at base and below with a few 



