RT. 1. MOSQUITOES OF THE UNITED STATES—DYAR,. 65 
United States Records. 
ALASKA: Camp 827, Alaska Engineering Commission, July 138, 1921 (J. M. Al- 
drich). 
Camp 334, Alaska Engineering Commission, July 9, 1921 (J. M. Al- 
drich). 
Seward, July 24, 1921 (J. M. Aldrich). 
Healy, July 7, 1921 (J. M. Aldrich). 
Hurricane, July 15, 1921 (J. M. Aldrich). 
Inspiration Point. July 28, 1919 (H. G. Dyar). 
Skagway, June 24, 1919 (H. G. Dyar). 
CALIFORNIA: Fallen Leaf Lake, June 20, 1916 (H. G. Dyar). 
Tahoe City, June 18, 1920 (H. G. Dyar). 
Summit, Placer County, June 20, 1920 (H. G. Dyar). 
Little Truckee River, May 6, 1921 (H. G. Dyar). 
MontTANA: Bozeman, May 7, 1907 (R. A. Cooley). 
AEDES (HETERONYCHA) NIPHADOPSIS Dyar and Knab. 
Aédes niphadopsis DyaR and Knap, Ins. Ins. Mens., vol. 5, p. 166, 1917. 
A medium-sized light-gray mosquito. Mesonotum gray, with 
brown shade centrally, two narrow black lines and paired white spots, 
often confused into a mixture of brown and light gray, the females 
especially showing the less typical marking. Abdomen black with 
wide basal segmental white bands and scattered scales, forming a 
more or less developed median line; sometimes the abdomen nearly 
all white; venter white scaled. Legs black, with many white scales, 
often more white than black, the femora pale beneath. Wing scales 
black, those on subcostal vein and vein 3 within the cell, white in 
part. 
The larvae occur in early spring ground pools containing more or 
less salt water from the mineral springs on the eastern shore of the 
Great Salt Lake. The adults have a coloration befitting the open 
desert where they fly; but in all structural points the species is close 
to impiger and cataphylla. The larvae show differences, but are 
somewhat variable and inconstant, as if in a degenerated state. 
Distribution —FKastern shore of Great Salt Lake, Utah. 
United States Records. 
Uraw: Salt Lake County, April 10, 1914 (C. T. Voorhies). 
Salt Lake City, April 15, 1920 (H. G. Dyar). 
Garfield, April 22, 1920 (H. G. Dyar). 
AEDES (HETERONYCHA) LAZARENSIS Felt and Young. 
Culex lazarensis Fett and Young, Science, n. s., vol. 20, p. 312, 1904. 
Culex borealis Luptow, Can. Hnt., vol. 48, p. 178, 1911. 
A rather large blackish mosquito. Mesonotum dull yellow, often 
a little mixed with blackish: two median black-brown lines and short 
60466—23—Proc.N.M.vol.62——_5 
