ArT. 1. MOSQUITOES OF THE UNITED STATES—DYAR., 67 
meadow entirely snow covered, in soft spots in the snow, and were 
collected by dipping in the mixture of snow and water. The species 
is colored like normal lazarensis of the East, and is probably to be 
considered as an isolated local race thereof. The specimens are rather 
undersized for dazarensis and not of the coloration the species assumes 
in its nearest occurrence. There are also small larval differences. 
Distributton—Mount Rainier, Washington. 
United States Records. 
WASHINGTON: Mount Rainier, August 4, 1906 (Dyar and Caudell). 
Indian Henry’s, Longmire Springs, June 25, 1917 (Allen and 
Flett). 
AEDES (HETERONYCHA) MASAMAE Dyar. 
Aédes (Heteronycha) masamae Dyan, Ins. Ins. Mens., vol. 8, p. 166, 1920. 
A rather large blackish mosquito. Mesonotum gray, with two 
black lines, the disk overspread with brown in the middle, generally 
very broadly so, leaving only the narrow margins gray. Abdomen 
black, basal segmental white bands narrowed centrally; venter white, 
with more or less developed apical segmental black bands. Legs 
black, the femora white beneath; knee spots white. Wing scales all 
dark. 
The larvae occur in small pools along little streams from the melt- 
ing snow, the pools being under trees and just below the snow line. 
As the snow retreats up the mountain slope, successive pools appear. 
The adults, hatching from the lower pools, remain only in small part 
where hatched, but mostly follow up over the unmelted snow for 12 
miles or more above the snow line. They are most numerous about 
the snow line, where they probably attack bears, attracted to the 
fresh wet grass. They are known locally as “snow mosquitoes” from 
this habit. This is to be considered as a local race of lazarensis. 
NNstribution—Mountains about Crater Lake, Oregon. 
United States Records. 
OREGON: Crater Lake, July 30, 1920 (H. G. Dyar). 
Prospect, May 24, 1921 (H. G. Dyar). 
Engineer’s Camp, above Whiskey Creek, May 24, 1921 (H. G. Dyar). 
AEDES (HETERONYCHA) TAHOENSIS Dyar. 
Aédes tahoensis DyAr, Ins. Ins. Mens., vol. 4, p. 82, 1916. 
A rather large blackish mosquito. Mesonotum gray, with two 
black lines, the disk sometimes overspread with brown in the mid- 
dle, generally not, and never very broadly. Abdomen black, basal 
segmental white bands narrowed centrally; venter white, with more 
or less developed apical segmental black bands. Legs black, the 
femora white beneath; knee spots white. Wing scales all dark. 
