68 A Monograph of Culicidae. 



Time of capture. — November. 



Observations. — Described from a single $ . Its wing markings 

 and general appearance resemble P. nigrifasciatus, but the white 

 apex to the palpi at once separates it. The marked specific 

 character is in the venation, notably the much curved branches 

 of the second long vein and the abnormally long mid cross- 

 vein. 



Pyretophorus sergentii. n. sp. 



Thorax slaty grey in the middle, deep brown at the sides (in 

 some lights dark brown in centre, dull ochreous at sides), with 

 narrow-curved pale scales. Palpi with three pale bands, apex 

 white. Wings dark scaled ; costal border with five large dark 

 spots, four spreading evenly on to first long vein ; a few pale 

 spots on wing field, notably at the cross-veins and bases of the 

 fork-cells. 



<j? . Head brown with grey median and brown lateral 

 upright-forked scales. Proboscis thin, brown, with yellow 

 labellae. Palpi with three pale bands, one apical, the two apical 

 ones closer together than the second and third. Thorax slaty- 

 grey in the middle with three rather obscure longitudinal dusky 

 lines, sides deep rich brown (in some lights the thorax appears 

 dark brown in the middle, with dull ochreous sides and then 

 deep brown laterally), with narrow-curved pale almost grey 

 scales, which are widest and most prominent in front, especially 

 in the median area ; a few deep brown specks over the grey 

 surface ; scutellum slaty grey with a dark median area and pale 

 golden border-bristles. 



Abdomen brown with dull golden to brown hairs. 



Legs brown, unhanded. 



Wings with the outer costal border with five nearly equal 

 black spots, the first four spreading uniformly on to the first 

 long vein, the basal one not doing so, the apical spot slightly 

 smaller than the others ; most of the veins uniformly dark 

 scaled, a pale spot at the base of each fork-cell, at the cross- 

 veins, one on the lower branch of the fifth vein and one on the 

 stem, and a pale area towards the base of the sixth ; there is 

 also a pale spot at the apex of each vein where it joins the 

 costa ; fringe with a pale spot where the veins join the costa, 

 except the sixth long vein ; apex yellow ; first sub-marginal cell 

 much longer and slightly narrower than the second posterior 

 cell, its base nearer the base of the wing, its stem rather more 



