THE BAHAMA ISLANDS 289 



Wings. — With narrow, long, lateral, brown scales, and with the first sub- 

 marginal cell considerably longer and narrower than second posterior cell; 

 stem very short, as in Ciilex pipiens Linne ; halteres with pale brown stem and 

 dark brown knob. 



Remarks. — 5 specimens of this form were taken at Nassau, July 2. 



CULEX TRIVITATTUS Coq. 



Plate LI, Fig. 2 

 Culex trivitattus Coquillett, 1902, Jour. N. Y. Ent. Soc, vol. x, p. 193. 



Description. — " Black. Near Culex triseriatus, but with three vittse 

 of blackish scales on the mesonotum; the first joint of antenna and base of 

 second, the coxfB, and greater portion of femora, yellow; scales of palpi black, 

 those on the occiput' light yellow, a large patch of dark grey ones on each side 

 of the middle, the upright ones yellow ; scales of mesonotum brassy-yellow, and 

 with three broad vittse of blackish ones, the median vittse not quite extending 

 to either end of the mesonotum; scales of abdomen black, those at the front 

 angles of the segments and on the venter, whitish; scales of the legs black, 

 those on coxae and on the posterior side of the femora and tibise, covering 

 nearly the whole of the hind femora, yellowish-white; tarsal claws rather 

 large, one-toothed; wings hyaline, lateral elongated scales of the veins narrow 

 and almost linear, second basal cell shorter than the first, petiole of first sub- 

 marginal cell nearly one-half as long as the cell. Length 4.5 to 5.5 mm." 



Remarhs. — 21 specimens of this form were taken at Tarpum Bay, July 7. 



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