72 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
NEw HAMpPsHIRE: Center Harbor, May 16, 1902 (H. G. Dyar). 
MAINE: Caribou, August 17, 1906 (E. M. Patch). 
MONTANA: Drummond, July 10, 1917 (H. G. Dyar). 
Bozeman, July 12, 1917 (H. G. Dyar). 
ARKANSAS: Scott, April 28, 1909 (J. K. Thibault). 
Group STIMULANS. 
AEDES (HETERONYCHA) EXCRUCIANS Walker. 
Culex excrucians WALKER, Ins. Saund., p. 429, 1856. 
Culex abfitchit Fett, Bull. 79, N. Y. State Mus., p. 881, 1904. 
Culex siphonalis GROSSBECK, Can. Ent., vol. 36, p. 332, 1904. 
Aédes sansoni Dyar and Kwnas, Can. Ent., vol. 41, p. 102, 1909. 
Aédes euedes HowArp, Dyar, and Knas, Mosq. No. & Cent. Am. & W. L., 
vol. 4, p. 714, 1917. 
A rather large brown mosquito with ringed legs. Mesonotum 
yellowish gray on the sides, a broad reddish brown or dark brown 
band in the middle, joining the short posterior stripes but variable, 
sometimes all brown. Abdomen blackish, with basal segmental 
white bands, widening on the sides, and some white scales on the 
apices of ane segments also; venter whitish, with a row of black 
dashes on middle line. Legs black, with many white scales inter- 
mixed on femora and tibiae, the tarsi with white rings at the bases 
of the joints, broad on the hind pair. Wings with black scales, with 
more or less white ones intermixed, especially along costal region. 
The adult females are not certainly distinguishable from fitchii 
or stimulans. This is commonly a larger species than fitchii, the 
sides of the mesonotum more shaded with brown, often completely 
so. The wing scales commonly have few or no white scales; but all 
the characters are intergradient, and not of diagnostic value. The 
larvae and male genitalia differ conspicuously in the three species. 
The winter is passed in the egg stage, the larvae developing in 
early spring water, woods- Poole: Gaal marshes. There is but one 
annual generation, though the adults last most of the summer, fly- 
ing in the woods. The species does not enter houses. 
Distribution.—Northern forests from New Jersey to Canada, west- 
ward to British Columbia, Yukon Valley, and Alaska. 
United States Records. 
NEw JERSEY: New Brunswick (J. A. Grossbeck). 
New York: Watkins, May 18, 1920 (H. G. Dyar). 
Plattsburg, April 24, 1905 (H. G. Dyar). 
MASSACHUSETTS: Wilmington, July, 1910 (H. S. Barber). 
MINNESOTA: St. Paul, June 16, 1916 (C. W. Howard). 
WISCONSIN: Saxeville, May 22, 1909 (B. K. Miller). 
