64 ; PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
A small blackish mosquito. Head gray, with or without black 
spots. Mesonotum gray on the margins, more or less overspread with 
brown centrally, and with two median blackish stripes and short 
posterior lateral ones. Abdomen black, with rather broad basal seg- 
mental white bands, usually not narrowed centrally; venter whitish, 
with apical black segmental bands. Legs black, somewhat mixed 
with white scales, especially below, femora white below. Wing scales 
wholly dark. Palpi of the male with few or no white scales. 
A description of the markings shows no difference from lazarensis ; 
but the habitus is characteristic, and when once learned, the species 
can generally be recognized. The markings vary in the extent of me- 
dian brown shading, which may be absent, also the lines may be nar- 
row or broad, even completely filling the mesonotum. The winter is 
passed in the egg state, the larvae developing in the earliest spring 
pools. The males swarm low, near the ground, in front of small 
bushes under trees. 
Distribution—Northern forests from Atlantic to Pacific. 
United States Records. 
New York: Elizabethtown, April 25, 1905 (H. G. Dyar). 
Plattsburgh, April 19, 1905 (H. G. Dyar). 
Minnesota: Aitkin County, May 16, 1916 (C. W. Howard). 
CALIFORNIA: Lake Tahoe, May 6, 1921 (H. G. Dyar). 
ALASKA: Skagway, June 24, 1919 (H. G. Dyar). 
AEDES (HETERONYCHA) CATAPHYLLA Dyar. 
Aédes cataphylla Dyar, Ins. Ins. Mens., vol. 4, p. 86, 1916. 
Aédes prodotes Dyar, Ins. Ins. Mens., vol. 5, p. 118, 1917. 
A small blackish mosquito. Mesonotum gray, more or less or not at 
all overspread with dark brown centrally, sometimes almost com- 
pletely dark brown, rarely with traces of median paired blackish 
lines. Abdomen black, with basal segmental white bands, rather 
broad and usually not narrowed centrally; venter whitish scaled. 
Legs black, with many white scales intermixed, especially below; 
femora white below. Wing scales black, often with white ones inter- 
mixed, especially along subcostal region. Palpi of the male with 
many white scales toward the tip of the long joint. 
The mesonotal markings run into zmpiger on the one hand and into 
intrudens on the other. It isa small species, like ¢mpiger. The win- 
ter is passed in the egg state, the larvae developing in early spring 
pools. The females bite both by day and night. The males swarm 
high over spaces between bushes or small trees in open country. 
Distribution Northern Rocky Mountains to Alaska, and Sierras 
of California. 
