34 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
dark. Mesonotum with smooth nude areas, a line of golden scales in 
the middle, and large patch of silvery gray ones on the shoulders. 
Abdomen brown scaled, with scattering white ones especially toward 
the tips of the segments. Legs with the yellow integument showing 
in many places; black erect scales at ends of femora, all of tibiae and 
apices of tarsal joints, the tarsi, especially the hind pair, broadly 
white ringed at the bases. Wings with narrow brown scales, mixed 
with some whitish ones along the costa. 
The larvae live in temporary rain puddles, and are predaceous upon 
the larvae of other mosquitoes with the same habit, either Psorophora 
(subgenus Grabhamia) or Aédes. The period of larval life is very 
short. The winter is passed in the egg state, the eggs being spinose 
and adapted to withstanding desiccation. The adult is a severe biter; 
but may be classed otherwise as a beneficial insect, since its larva de- 
stroys many other mosquito larvae. 
Distribution.—Northern Mexico to the eastern United States east 
of the plains to northern New York. 
United States Records. 
MASSACHUSETTS: Springfield, September 20, 19038 (F. Knab). 
Connecticut: Suffield, August 24, 1874 (G. Dimmock). 
New York: Valcour Island, Lake Champlain (G. H. Hudson). 
New JERSEY: Delair, September 27, 1900 (W. P. Seal). 
MaryLANpD: Baltimore, July, 1899 (D. C. Clark). 
DistTrRiIcT OF COLUMBIA: Washington, July 28, 1906 (H. S. Barber). 
VIRGINIA: Grassymead, June 20, 1904 (H. G. Dyar). 
WEST VIRGINIA: Kanawha Station, July 20, 1907 (A. D. Hopkins). 
NortH Carorina: Sullivan Island, August 31, 1903 (W. H. Parker). 
SoutH CaARoLIna: McClellanville, October 12, 1906 {____). 
GrorciA: Savannah, September 1, 1920 (V. H. Bassett). 
FroripaA: Key West, August, 1901 (A. Busck). 
Miami, November 1, 1921 (G. F. Moznette). 
Missrsstppr1: Agricultural College, July 10, 1902 (G. W. Herrick). 
LovIsIANA: Johnson’s Bayou, July 26, 1906 (J. D. Mitchell). 
ARKANSAS: Deckerville, October 5, 1900 (W. B. Burns). 
Texas: Brownsville, May 26, 1904 (H. S. Barber). 
INDIAN TERRITORY: Wister, July 5, 1904 (H. S. Barber). 
KANSAS: Manhattan, August 24, 1906 (R. E. Eastman). 
NEBRASKA: Lincoln, August (L. Bruner). 
Towa: Burlington (P. Bartsch). 
MicHiGcan: Agricultural College, September 8, 1896 (R. H. Pettit). 
INDIANA: Winona Lake (E. B. Williamson). 
PSOROPHORA (PSOROPHORA) CTITES Dyar. 
Psorophora ctites Dyar, Ins. Ins. Mens., vol. 6, p. 126, 1918. 
A very large mosquito with dusky wings and white-ringed legs, 
differing only from céliata in lacking the raised scales on the legs 
