522 



A Monograph of Culicidae. 



not reaching quite the front of the mesonotum and slightly 

 diverging posteriorly, and the scales becoming long and hair- 

 like before the scutellum and passing as two lines on to it, and 

 projecting from it as two long tufts ; on each side of the meso- 

 notum a similar thin white curved line ending at the scutellum ; 

 metanotum deep brown, showing two median parallel pale lines ; 

 pleurae brown with two thin silvery parallel longitudinal lines, 

 running roughly parallel with the lateral thoracic one. 



Abdomen deep brown, unhanded, the second segment with a 

 basal white patch and some white scales on the apex of the 

 last segment, laterally are basal white patches ; venter pale 

 scaled. 



Legs black, femora and tibiae mottled with white scales, 

 traces of pale bands in fore legs on the first three tarsal 

 segments, in the mid legs a white spot involving both sides of the 

 tibio-tarsal and other joints, almost amounting to bands, in the 

 hind legs the white banding is much more pronounced and the 

 femora are mostly white ; the femora have also a white ventral 

 line ; ungues equal and simple. 



Wings with long dense lateral brown vein scales, much wider 

 than in Culex and especially broad on the sixth vein, the first 

 long vein densely white scaled from its base up to the termination 

 of the second long vein ; the first sub-marginal cell much longer 



Fig. 239. 

 Wing of Bancroftia albicosta. (9 .) Lutz 



and narrower than the second posterior, its base nearer the base 

 of the wing and its stem about one-third the length of the cell ; 

 the stem of the second posterior about two-thirds the length of 

 the cell ; posterior cross-vein about two and a half times its own 

 length distant from the mid, 



Length. — 4 • 5 to 5*3 mm. 



Habitat. — Cantoveira, Sao Paulo, Brazil. 



Time of capture. — April. (Dr. Lutz.) 



