azr. 1. MOSQUITOES OF THE UNITED STATES—DYAR. 49 
Mississippi: Natchez, June 9, 1910 (A. Fleming). 
NortH Carorina: Charlotte, July, 1916 (H. P. Barret). 
AEDES (HETERONYCHA) DUPREEI Coguillett. 
Culex dupreei CoQuILLETT, Can. Ent., vol. 36, p. 10, 1904. 
A very small mosquito, the mesonotum broadly silvery in the mid- 
dle the whole length in the female, brown at the sides, the whole meso- 
notum silvered in the male; head silvery scaled. Abdomen black 
above, with lateral segmental white spots in the female, broad basal 
segmental bands in the male; venter pale. Legs black, the femora 
white below toward base, a pale line along the underside of tibiae 
and tarsi. Wing scales dark. 
The larvae live in ground puddles and on account of the very long 
tracheate anal gills are able to remain down and seldom come to 
the surface. The larvae are therefore difficult to collect, and as 
the adults are hardly ever met with, the species is rare in collections. 
Distribution—Atlantic and Gulf States, probably extending to 
Central America. Some of the records in the monograph? are in 
error. The specimen from Washington, District of Columbia, is 
triseriatus,; that from Trinidad is oligopistus, thus leaving the only 
southern record Costa Rica, which depends upon unbred larvae, 
without adults. 
United States Records. 
New Jersey: New Brunswick, August 1 (J. B. Smith). 
LOUISIANA: Baton Rouge (J. W. Dupree). 
ARKANSAS: Scott, July 11, 1909 (J. K. Thibault). 
AEDES (HETERONYCHA) ATLANTICUS Dyar and Knab. 
Aédes atlanticus Dyar and Kwnas, Journ. N. Y. Ent. Soc., vol. 14, p. 193, 
1906. 
A medium-sized blackish mosquito, the mesonotum with a rather 
narrow Silver line in the middle the whole length. Abdomen black, 
with basal segmental lateral white patches; venter pale. Legs black, 
the femora white below. Wing scales all dark. 
The larvae occur in temporary ground pools, usually swampy 
and with vegetation. The adults are seldom seen. This species 
is said to differ from tormentor by having the hind tibiae dark 
below while those of the other species are narrowly pale. The 
character is difficult to observe, elusive and probably not constant. 
The only certain distinction between the two is the male genitalia. 
Distribution—Southern States. 
13 Howard, Dyar, and Knab, Mosq. No. & Cent. Am. & W. I., vol. 4, p. 781, 1917. 
60466—23—Proc.N.M.vol.62——4 
