EEPORT ON ECONOMIC ENTOMOLOGY 



79 



wide, the branches turning out ut the apex, its stem about two-tliirds the k-ngth 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. 4 to 45 mm. 



Habitat. Lualas, Upper White Nile (Sheffield Neave, Esq.). 



Time of Capture. January. 



Obsei'vations. Described from two females. The species is very marked, the bright 

 reddish-brown thorax contrasting strongly with the dark unhanded abdomen. The thorax in 

 both specimens is slightly denuded, but what scales remain are distinctly black and small. 

 The structure of the second posterior cell is also characteristic. 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 chstae, the 

 antepenultimate has two long and some small ones. 



Culex viridis, Theob. 



Mono. Culicid. III., p. 212 (1903) 

 First Report Gord. Coll. Well. Labs., p. 73 (1904) 

 A female and two males which resemble the type in all characters. C\i\e\ viridis 



There are no structural differences from the type. They resemble specimens I have 

 seen from Gambia and Uganda. The abdomen is unhanded, otherwise the species looks 

 at first much like Culex fatigans, Wied., or Culex pallidocephala, Theob. 



It has been recorded from Uganda, Gambia, Sierra Leone, and before from the Sudan 

 (Fii-st Report, p. 73). The pleura are very green just as described in the type. The colour 

 was not due to verdigris showing through the pale grey pleura as I at one time thought. 



The rich green pleura? are very 

 characteristic of the species. The 

 female palp and second antennal 

 segment show the difference between 

 the two allied species and viridis, 

 which I undoubtedly placed all as 

 one in the previous report. 



Culex pallidocei^hala, Theobald 

 First Report, Well. Labs., G. C, 

 p. 73 (1904) 

 The female only of this species Cuiex 

 has been previously recorded. 



Several males have recently been 

 taken, from one of which the present 

 description is drawn up. 



^ Head deep brown, with 

 narrow-curved grey scales, with a 

 median dividing line, numerous up- 

 right black and ochreous forked 



pallidocephala 



Fig. 38. — CuLE.\ pallidocephala, Theo. d" 



