Genus Culex. 433 



cell much longer and narrower than the second posterior cell, its 

 stem more than one-third the length of the cell, its base nearer 

 the base of the wing than that of the second posterior ; second 

 posterior cell wide, the branches slightly diverging at apex, its 

 stem about two-thirds the length of the cell ; cross- veins large, 

 the mid longer than the supernumerary, about the same length 

 as the posterior one, which is distant from the mid nearly twice 

 its own length • scales at the apices of the veins somewhat 

 broader than is usual in Culex. 



Halteres with pale stem and fuscous knob. 



Length. — 3 -• 8 to 4 • 5 mm. 



Habitat. — Lualas, Sudan (Sheffield Neave). 



Time of capture. — January. 



Observations. — Described from several females. The species 

 is very marked, the bright reddish-brown thorax contrasting 

 strongly with the dark unbanded abdomen. The thorax in both 

 specimens is slightly denuded, but what scales remain are 

 distinctly black and small. The form of the second posterior 

 cell is rather marked. One 9 differs slightly in venation. 

 (Fig 190). The abdomen shows very indistinctly apical lateral 

 creamy spots. The female palpi are composed of four segments, 

 the three basal ones are small, the apical one is as long as the 

 basal three and ends bluntly ; the apical segment is spinose, the 

 penultimate has one long and several small chaetae, the ante- 

 penultimate has two long and some small ones. 



Culex guiarti. Blanchard (1905). 



Culex viridis. Theobald (1903). non Rob.- 

 Desvoidy (1827). 



Mono. Culicid. III., p. 212 (1903) ; First Report Gord. Coll. Well. Labs., 

 p. 73 (1904) ; Les Moust., p. 629 (1905), Blanchard. 



A female and two males that resemble the type in all 

 characters have been received from the Sudan. There are no 

 structural differences from the type. They resemble specimens 

 seen from Gambia and Uganda. The abdomen is unbanded, 

 otherwise the species looks at first much like Culex fatigans, 

 Wied., or Culex pallidocejphala, Theob. 



It has been recorded from Uganda, Gambia, Sierra Leone, 

 and before from the Sudan (1st Report, p. 73). The pleurae 

 are very green as described in the type. The colour was not 

 due to verdigris showing through the pale grey pleurae as was at 



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