160 GNATS on MOSQUITOES — CHAPTER XIII 



sometimes bronzy reflections : cox« pallid ; femora pale beneath. Halteres 

 grey, with fuscous knobs. Venter densely white-scaled. Length. — 

 About 5 mm. 



Habitat. — Grenada and St. Lucia, West Indies. 



120. CULEX CINEREUS, Theobald (Monog. II, p. 58). 



Tarsi dark brown. Thorax covered with dense grey scales. 

 Abdomen dusky-black ; the segments with lateral white patches, 

 which are more or less connected to form a white lateral line. 



Head covered with grey scales, slightly darker behind ; eyes bor- 

 dered with a thin pure white line ; palpi dark brown in both sexes, 

 those of the J , longer than the proboscis, except the extreme tip, which 

 is white ; proboscis dark brown ; antennte brown, as long as the pro- 

 boscis, rieurie, metanotum, and scuteUum ochreoiis -brown, the last 

 with the bristles of its mid lobe arranged in two separate lateral tufts. 

 Legs dark brown, with femora pale beneath ; coxae pure white. Halteres 

 entirely pale. Venter white-scaled. Length. — About 6 mm. 



Habitat. — Freetown, Sierra Leone, in houses. 



121. CULEX NIGROCHiETiE, Theobald (Monog. II, p. 60). 



Tarsi dark brown. Thorax blackish, densely covered with 

 narrow curved fawn-coloured scales, with a dark median line 

 when denuded, and black bristles; metanotum pale chestnut- 

 brown ; abdomen dusky-black, olive-brown on the dorsum, with 

 a few white lateral scales. Fore and mid tarsal claws of S , 

 very unequal, the large claws with an accessory tooth, the 

 smaller simple {vide Plate xvii, fig. 3). 



Head brown, with narrow white orbits, the clypeus chestnut-brown ; 

 appendages nearly black, but the proboscis rather paler and reddish at 

 the tip ; palpi of (? , with the second joint short, about half the length of 

 the apical joint ; apical joint with a few black bristles ; the verticils of 

 the antenna; springing from the middle, instead of, as usual, from the 

 bases of the joints. Pleune, metanotum, and scuteUum more or less 

 ochreous, the last Avith the bristles of the mid lobe arranged as a con- 

 tinuous fringe. Legs dark brown. Venter whitish. Halters with pale 

 stems and fuscous knobs. Length. — 3'5 mm. 



Habitat. — Lagos, "West Africa. 



122. CULEX ATRIPES, Skuse (" S. A. C." p. 1750). 



Wings unspotted. Tarsi uniformly coloured. Thorax dark 

 violet, with prothoracic lobes, an oblong spot before the roots 



