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 Culex 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 vittae 

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

 second, the coxae, 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 vittae of blackish ones, the median vittae 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 tibias, 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." 



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



19 



