Genus Culex. 427 



Observations. — Very marked and easily separated by the 

 genitalia, which have two flat blade-like plates. The male only 

 so far is known. 



Culex trimaculatus. Theobald (1905). 



Ann. Mus. Nat. Hung. III., p. 86 (1905). 



Head with dull golden narrow-curved scales and dark 

 upright forked scales. Thorax pale yellowish-brown, with a 

 large median reddish-brown elongate triangular spot and another 

 on each side behind ; metanotum bright yellowish-brown. 

 Abdomen brown, with pale (rather indistinct) basal bands 

 spreading out laterally. Legs brown unhanded. Wings with 

 scales of typical Culex form. 



$ . Head brown, with small narrow-curved golden scales 

 and numerous thin dark brown upright forked scales ; proboscis 

 rather short, brown ; palpi and antennae brown. 



Thorax pale yellowish-brown, with a median reddish-brown 

 elongated triangular spot, the base near ^m'*^ 



the head and another reddish-brown spot /^Y'*' : '/^\ 



on each side at the back, covered with /6v^\W//wA 



small scattered narrow-curved dull golden pS\^pfv^^l 



scales and numerous golden bristles over ^^^^Blllf^S^^? 1 

 the roots of the wings ; scutellum pale ^^^^^ffi/^fS^^O^ 

 yellowish-brown with dusky narrow- / /SkT — ^i<\v 

 curved scales on the mid lobe, paler ones VwTT^w 



on the side lobes ; border-bristles pale ^4-^ 



golden, nine to the mid lobe ; metanotum -Fig- 18 ?. 



na l p hr n wn Thorax of Culex 



paie Drown. trimaculatus. ?. 



Abdomen dull brown, with basal dull 

 yellow bands, which spread out laterally ; in certain lights the 

 abdomen looks dull ochreous. 



Legs brown, paler basally ; ungues of fore and mid legs 

 uniserrated, hind equal and simple. 



Wings with typical Culex-scales \ the first sub -marginal cell a 

 little longer and very slightly narrower than the second posterior 

 cell, its base slightly nearer the apex of the wing than that of 

 the second posterior ; its stem about two-thirds the length of the 

 cell ; stem of the second posterior also about two-thirds the 

 length of the cell ; posterior cross-vein rather more than its own 

 length distant from the mid cross- vein. 



Hal teres ochreous. 



