Genus Bancroft ia. 521 



Genus BANCROFTIA. Lutz. 



Mosquitos do Brasil, pp. 40-59 (1904). 



Head clothed with small flat scales, except for a line of small 

 narrow-curved median ones, spreading out basally and narrow 

 curved ones around the eyes. 



Palpi of J nearly one-third the length of the proboscis, thin. 



Thorax mostly nude, with minute narrow-curved and larger 

 narrow-curved scales, the latter becoming long and thin, and 

 forming tioo prominent tufts projecting from the scutellum. 



Wings with dense rather large linear lateral vein scales, 

 which become larger towards the base of the veins, and more 

 spatulate on the sixth vein, median vein scales present, not closely 

 oppressed to the vein. Scales at the base of the first long vein 

 short and broad. This very distinct genus, founded by Lutz, 

 can at once be told by the cephalic and scutellar squamose 

 structure. 



A single species so far only is known. 



Bancroftia albicosta. Lutz (1904). 

 Mosquitos do Brasil, p. 40 (1904). 



Head black with a narrow white border around the eyes. 

 Thorax bright brown, with a narrow white line around its border 

 and two on the middle nearly parallel, widely separate. Abdomen 

 deep brown, unhanded with basal lateral white sj^ots and pale 

 venter. Legs deep brown with basal and apical white bands, 

 most pronounced on the hind legs. Wings brown scaled, the 

 base of the first long vein forming a prominent white line. 



9 . Head deep brown with a median line of golden narrow- 

 curved scales spreading out at the back of the head, small flat 

 dusky scales over most of the area, a thin line of narrow-curved 

 snowy white ones around the eyes and small flat white ones at 

 the sides ; upright forked scales black. Palpi long and thin, black 

 with white apex ; proboscis black with two white spots one 

 towards the apex ; antennae deep brown, the internodes with 

 numerous dark hairs ; clypeus brown, elongated oval with a keel 

 down the middle. 



Thorax bright brown, with a median broad line of minute 

 golden curved scales, a narrower one on each side, the intervening 

 spaces bare, then a thin line of narrow-curved silvery white scales, 



