106 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62 
Distribution.—Western United States except the moist northern 
Pacific strip, eastward through Canada to northern Maine; Europe 
and Asia. 
United States Records. 
CALIFORNIA: Sweetwater Junction, June 12, 1906 (Dyar and Caudell). 
Fresno, April 4 (EK. A. Schwarz). 
Sisson, July, 1906 (Dyar and Caudell). 
OREGON: Klamath Falls, July 27, 1906 (Dyar and Caudell). 
NEvADA: Steamboat Springs, August 19, 1915 (H. G. Dyar). 
UtauH: Lehi, September 8, 1905 (W. A. Hooker). 
ALASKA: Fort Gibbon, June 6, 1907 (Army Medical Museum). 
Maine: Weld, July 25, 1910 (H. G. Dyar). 
Norcross, July, 1914 (Z. P. Dyar). 
ANOPHELES (ANOPHELES) WALKERI Theobald. 
Anopheles walkeri THEOBALD, Mon. Culic., vol. 1, p. 199, 1901. 
A medium-sized blackish Anopheles, without conspicuous wing 
spots. Palpi with small white rings at the bases of the joints. 
Mesonotum dark brown, unifermly colored. Abdomen _ blackish, 
with brown hairs. Legs long and slender, black, the femora pale 
below; small white spots at tips of femora and tibiae. Wing scales 
black, not forming distinct spots, though sometimes slight ones at 
the bases and forks of second and fourth veins. 
The larvae inhabit water formed by overflows from rivers, which 
occasionally go dry. The habits of the males are unknown. It 
has not been demonstrated whether this species carries malaria. 
Distribution.—Kastern North America. 
United States Records. 
MicHIGAN: Camp Custer, Battle Creek (Army Medical Museum). 
MassacHusetts: Westfield, August 23, 1908 (F. Knab). 
District oF Cotumpra: Washington, June 10, 1911 (I. Knab). 
Chain Bridge, October 15, 1906 (T. Pergande). 
Vireinta: Addison, November 7, 1909 (A. N. Caudell). 
Long Bridge, September 12, 1916 (A. H. Jennings). 
ARKANSAS: Little Rock (J. K. Thibault). 
LovuIs1aNA: Terrebonne, March 29, 1901 (G. E. Beyer). 
ANOPHELES (ANOPHELES) ATROPOS Dyar and Knab. 
Anopheles atropos Dyar and Knap, Proc. Biol. Soc. Wash., vol. 19, p. 160, 
1906. 
A rather small blackish Anopheles with unspotted wings. Mesono- 
tum elongate, deep brown. Abdomen blackish in the integument, 
with dark hairs. Legs and palpi entirely dark, the latter with traces 
of paler markings at the articulations. Wing scales entirely dark, 
not forming spots. 
