364 MOSQUITOES OF NOETH AMERICA 



palpi clothed with deep brown scales, tvMte scaled apically; proboscis deep brown; 

 antennae deep brown, basal segment pale on one side, base of the second segment 

 pale testaceous. 



Thorax deep brown, clothed with narrow-curved dull golden scales with two 

 median parallel bare lines and with scantier rather darker scales on each side in 

 front of the wings and another area on each side in front of these showing as darker 

 areas with a hand lens, posterior part of mesonotum paler scaled than the rest, the 

 two median parallel lines of deep brown chaetae showing up prominently; scutellum 

 pale ochreous brown with narrow-curved creamy scales and rich brown border- 

 bristles, eight to the mid lobe; metanotum brown, paler in places; pleurae pale 

 yellowish-brown with patches of flat white scales. 



Abdomen deep brown with basal white bands and pale creamy scaled venter; 

 hairs pale. 



Legs deep brown, femora and tibiae pale ventrally, hind tibiae with apical pale 

 spot; ungues equal and simple. 



Wings with the first fork-cell much longer, but very little narrower than the 

 second posterior cell, its base nearer the base of the wing, its stem not quite one- 

 fifth the length of the cell, stem of the second posterior not half the length of the 

 cell; posterior cross-vein nearly twice its own length distant from the mid; lateral 

 vein scales dense. Halteres pale. 



Length. 6 mm. 



Habitat. Osaka, Japan. 



Observations. Described from a series sent me some time ago through Mr. 

 Cornford; the name of the collector has been lost. 



This species was put on one side as Culex fatigans, but its general form seemed 

 different, being larger and of a more straggling build. It differs in having white 

 scaled 5 palpi, .... and in the wing venation; the short stalk of the first fork-cell 

 is noticeable at once, although variable, and the thorax shows definite but obscure 

 ornamentation. . . . 



Grigijval Description of Culex quasiguiabti (female only) : 



Head black, a small median paler area in front, eyes silvery; palpi and proboscis 

 black, the former darker. Thorax rich deep brown with bronzy-brown and dull 

 golden narrow-curved scales; pleurae brown and grey with patches of flat white 

 scales. Abdomen of 5 black unhanded but with lateral basal white spots and golden 

 border-bristles giving almost a banded appearance. . . . Legs unhanded. 



5- Head black with a median V-shaped area of small narrow-curved golden scales, 

 not reaching quite to the nape, dusky at the sides with dense black upright forked 

 scales, which give the head a black appearance, no fork scales on the golden median 

 area; small flat dull white scales at the sides; six black incurved long chaetae on 

 each side on the eye borders; palpi and proboscis jet black; antennae thick, black. 

 Palpi of three segments, the apical one longer than the other two. 



Thorax rich deep brown with bright bronzy narrow-curved scales, some showing 

 dull golden reflections especially over the roots of the wings; chaetae black; 

 scutellum pale ochreous with very pale golden scales; metanotum brown; pleurae 

 brown and grey with patches of flat white scales. 



Abdomen with dull ochreous integument covered with small flat dark scales with 

 dull violet reflections, black in certain lights, unhanded, but the scales are scanty 

 at the bases of the segments, this and the five brown and golden tipped border- 

 bristles give a quasi-banded appearance; basal segment ochraceous with a squarish 

 median patch of black scales and fine long brown hairs with golden tips; the chaetae 

 in certain lights pale golden; laterally are basal white spots; venter with basal half 

 of segments pale scaled. 



Legs uniformly black except base and under side of the femora, a small pale 

 knee spot on each leg; ungues equal and simple. 



Wings with rather long fork-cells, the first sub-marginal cell much longer and 

 narrower than the second posterior, its base nearer the base of the wing, its stem 

 about one-fourth the length of the cell; stem of the second fork-cell less than half 

 the length of the cell; posterior cross-vein a little longer than the mid and a little 

 more than its own length distant from it; lateral vein scales long and thin. 



Length. 5 to 5.5 mm. 



Habitat. Mpuma, Uganda (Sir David Bruce). 



Observations. Described from three $'s . . . . It comes near to Culex guiarti, 

 Blanchard, but can be told by the absence of green pleurae, and near C. Azorie)isis, 

 Theobald, but can be told from that by the peculiar cephalic adornment and the vena- 

 tion .... and from C. chloroventer in head adornment. 



Type in the British Museum. 



