350 MOSQUITOES OF NORTH AMERICA 



thorax; scutellum blackish, with narrow pale curved scales and deep brown border 

 bristles; metanotum deep black; pleurae black, with patches of white scales. 



Abdomen steely-black, with basal pale creamy-yellow bands, the rest of the 

 abdomen covered with dusky-black scales; border bristles pale, alternately short 

 and long; numerous long lateral hairs also present; venter, with the bases of the 

 segments, broadly banded with pale ochraceous. 



Legs deep brown, almost black, with a small white knee spot; ochraceous when 

 denuded; hind metatarsus considerably longer than the hind tibia; ungues eaual 

 and simple. 



Wings with the veins covered with small brown median scales and dense long 

 lateral ones; first sub-marginal cell much longer and narrower than the second 

 posterior cell; its base nearer the base of the wing than that of the latter, its stem 

 equal to nearly half the length of the cell, considerably shorter than the stem of the 

 second posterior cell, which is longer than the cell; posterior cross-vein about two 

 and a half times its own length distant from the mid cross-vein; sub-costal joins the 

 costal nearer the apex of the wing than the base of the first sub-marginal; black 

 bristles close to the base of the first long vein. 



Halteres ochraceous-brown. 



Length. — 3.8 to 4 mm. 



c?. Head as in the 5; palpi dark brown, the last two joints nearly equal, the 

 penultimate joint and the base of the apical joint pure white scaled below, there is 

 also a pale yellow band towards the base; the last two joints and apex of the ante- 

 penultimate joint with short rather thick black hairs; antennae banded black and 

 white, the two long apical joints dark brown; plume hairs deep brown; proboscis 

 brown, quite black towards the tip. 



Thorax as in the $. 



Abdomen with basal pale creamy bands, that on the seventh expanding laterally; 

 densely hairy. 



Legs as in the female; fore ungues unequal, both uniserrated, those of the mid 

 legs the same, but the larger one more curved; those of the hind legs very small, 

 equal and simple. 



Length. — 3.5 mm. 



Habitat. — Fou Chow (Rennle) (84). 



Time of capture. — August 



Observations. — A very obscure species, but I think quite distinct. It comes near 

 C. fatigans, Wiedemann, but the thorax has no linear stripes and the abdomen is 

 much blacker. 



Obioinai, Description of Culex fatigans subspecies luteoannux.attjs: 



Abdomen dusky black or brown, with basal flaxen curved bands and pure-white 

 lateral spots; pleurae and metanotum chestnut-brown; thorax with traces of two 

 parallel bare median lines. 



Obiginal Descbiption of CirtEX fatigans subspecies macleati: 



Abdomen brown, with basal pale flaxen to_ almost white bands and white lateral 

 spots; thorax with two very clear median parallel bare lines in front, widening out 

 towards the fore end. 



Obiginai. Descbiption of Culex fatigans subspecies tbilineatus : 



In which the median line of dark thoracic bristles shows as a third median line 

 on the thorax. 



OBiQiNAii Descbiption of Culex osakaensis (male only) : 



.... [Palpi] of (^ all dark brown. 



(?. Palpi acuminate deep brown apically, considerably longer than the proboscis, 

 the apical segment longer than the penultimate, both with brownish-black scanty 

 hair-tufts, the two apical segments about two-thirds the length of the penultimate; 

 antennae brown and white banded, plume-hairs brown, second and few following 

 segments rather large. Fore and mid ungues unequal, both uniserrate, hind equal 

 and simple. 



Wings with the scales scantier and rather broader than the ?; flrst sub-marginal 

 cell longer and narrower than the second posterior, its base nearer the base of the 

 wing, its stem less than one-third the length of the cell; stem of the second posterior 

 three-fourths the length of the cell; posterior cross-vein twice its own length distant 

 from the mid; the supernumerary cross-vein slopes at a prominent angle to the mid 

 as In the ?. 



Genitalia with long narrowish basal lobes, bluntly acuminate, claspers short, 

 curved and broadish, not half the length of the basal lobe; terminal segment short 

 and rather broad; lateral process of the basal lobe with three large and broad spines, 



