CULEX AGITATOR 385 



within; hairs of whorls sparse, rather long. Clypeus rounded, convex, brown, 

 nude. Occiput blackish, with a few narrow, curved scales behind, the remainder 

 broader, flat, bronzy black, gray in some lights, intermixed with erect, forked 

 black ones; a narrow margin along eyes and the cheeks with broad dull-white 

 scales ; a row of black setae along margins of eyes. 



Prothoracic lobes elliptical, remote dorsally, clothed with pale scales and 

 black bristles. Mesonotum dark brown, clothed with narrow, curved, uniformly 

 bright bronzy brown scales; bristles long, coarse, black. Scutellum trilobate, 

 witii similar vestiture to mesonotum, each lobe with a tuft of black bristles. 

 Postnotum elliptical, prominent, brown, nude. Pleurae brown, with a few flat 

 white scales ; coxae luteous. 



Abdomen subcylindrical, truncate at tip; dorsal vestiture black with a slight 

 bronzy and blue reflection, a small basal segmental whitish spot on second to 

 fifth segments ; a row of lateral, basal, segmental, triangular white patches ; 

 venter banded with black and white, the basal halves of segments white ; hairs at 

 ends of segments coarse, pale ; last segment bristly at tip. 



Wings moderate, hyaline ; petiole of second marginal cell one-third as long 

 as its cell, that of second posterior cell shorter than its cell ; basal cross-vein dis- 

 tant about twice its owq length from anterior cross- vera ; scales of veins bronzy 

 brown, outstanding ones on second to fourth veins towards tip of wing narrowly 

 ovate, dense, those nearer base long, linear. Halteres whitish, knobs darker. 



Legs moderate; vestiture bronzy brown, with a pale shade beneath; femora 

 with a blue reflection, white beneath nearly to tips. Claw formula, 0.0-0.0-0.0. 



Length : Body about 3 mm. ; wings 3.8 mm. 



Male. — Proboscis long, straight, gradually enlarged towards apex, black 

 scaled. Palpi exceeding the proboscis by more than the length of the last joint; 

 last two joints slightly thickened, and with tip of long joint densely hairy; 

 vestiture bronzy black. Antennae plumose; last two joints long and slender, 

 rugose, pilose, black, the others short, whitish, ringed with black at insertions 

 of hair whorls ; hair dense, brown. Coloration similar to the female. Eecum- 

 bent broad scales on occiput whitish, nearly as pale as ocular margins. Wings 

 a little narrower than in the female, the stems of the fork-cells nearly the same, 

 vestiture somewhat sparser. Abdomen with lateral white spots large and 

 almost joining the dorsal spots to form bands; lateral ciliation coarse, pale 

 brown, abundant and irregular. Claw formula, 1.0-1.0-0.0. 



Length : Body about 3 mm. ; wing 2.5 mm. 



Genitalia (plate 9, fig. 61) : Side-pieces over twice as long as wide, tips con- 

 ically tapered, outer prominence slender, truncate, bearing three coarse setae and 

 a large leaf-like appendage, inner prominence situated near middle, partly 

 divided into four portions, each progressively shorter towards base and each 

 bearing a stout terminal seta, outer longer prominence with another seta on its 

 exterior aspect. Clasp-filament moderate, enlarged at base, simple, with articu- 

 lated terminal spine. Harpes produced into a long arm expanded and bent at 

 tip and bearing a row of coarse separated teeth. Harpagones elongate, slender, 

 expanded and bent at tip, arising from a plate with revolute margins, forming 

 a cylinder open at one side. 



Larva, Stage IV (plate 113, fig. 381) . — Head transverse, widest through eyes, 

 slightly convex on sides, a large notch at insertion of antennae, front margin 

 obtusely arcuate. Antennae long, slightly curved, thick and well spined on 

 basal two-thirds, with a large tuft from a notch ; two long setaa shortly before tip, 

 a moderate seta, a short one and a digit at tip. Mental plate small, triangular, 

 with a large stout central tooth and seven on each side, the last one small and 

 remote. Mandible quadrangular; three long filaments and a tuft of hairs before 

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