SOME NEW AMERICAN MOSQUITOES 69 



many black hairs present, forming longitudinal rows on the coxae, which 

 in the second are directed purely laterally, in the first more forward, in 

 the last turned posteriorly ; black scales intermixed with these bristles ; on 

 the first coxae some bristles behind the row near apex ; whitish scales 

 running along second and third coxae before the row of bristles ; first 

 episternum with a big tuft of hairs, intermixed with scales, a less condensed 

 group of bristles and some scales on the detached part of the second epi- 

 sternum, third episternum bearing a dense row of strongly white shining 

 hairs and white scales. 



Abdomen 1 .5 mm., about equaJ to the standard, blunt, black above, 

 with basal white lateral spots which are visible from above, eighth seg- 

 ment white dorsally ; venter dull whitish, with black apical bands, the 

 chitin greenish gray, bearing white scales at base and dark ones near 

 apex ; long, black, white-shining hairs are scattered over the sternites and 

 form apical rows on the tergites, last joints with finer hairs ; first tergite 

 with bristles only, except a median tuft of dark scales. 



Wings 3.3 mm., about 2^ the standard; second marginal cell one- 

 fourth of the length of the wing, three times as long as its petiole, longer, 

 narrower, and reaching nearer to base of wing than the second posterior 

 one ; posterior cross vein separated by less than twice its own length from 

 anterior ; membrane light gray ; vestiture of veins of dense ligulate black- 

 ish scales. Halteres light at base, black at outer half. 



Femora I < II < III ; first hind tarsal shorter than its tibia ; tip of tibia 

 brownish white; femora broadly white beneath, with rows of spines; 

 tibiae the same, but the light stripe smaller, most obvious in the hind tibiae, 

 the rest of legs dark. 



All dark scales on the body with submetallic luster, blue on dorsum of 

 legs, abdomen, and proboscis. 



Male. — Proboscis usually distinctly bent down near middle, bearing 

 here a long hair-tuft beneath ; white encircling, more extensive on ven- 

 tral face than in female. Palpi about 2.4 mm. long, black ; the proboscis 

 reaches sometimes only to the second quarter of the third joint, sometimes 

 to the proximal limit of its fourth quarter. Antennae black and white 

 ringed, densely plumose. White on margin of eyes more strongly marked 

 than in female. Thorax as in female, length 1.3 mm. Abdomen 1.5 

 mm. or a little more in length ; latersJ spots hardly visible ; apices of ter- 

 gites denuded, giving a lighter impression. Wings with sparser and 

 broader scales. Legs as in female, claws 1:1, 1:1,0:0. Male geni- 



