THE MOSQUITOES OF THE SOUTHEASTERN STATES il 
near a natural spring having a good flow of clear, cool water, and have 
taken the larvae in a few other places in Orange and Seminole Coun- 
ties. Larvae and adults have been taken in the vicinity of Gainesville, 
the larvae occurring there in a seepage outcrop. 7 
Although this species readily becomes infected with malaria para- 
sites under experimental conditions, it does not feed extensively on 
persons under natural conditions, and the epidemiological evidence 
indicates that it is not an important carrier of the disease. 
The conspicuous white spot on the costa, about two-thirds the 
distance from the wing base (pl. 5, C), is the chief recognition char- 
acter for this species. ‘The palpi are unbanded. In specimens from 
central Florida the size of the costal spot 1s usually reduced consid- 
erably, and in some individuals the wing may be almost entirely dark- 
scaled. This variation has also been observed occasionally in other 
areas and is possibly the form described as A. perplewens (Mount 
Gretna, Pa.). In larval specimens from Florida the antepalmate hair 
of segments 4 and 5 is usually single instead of double as in other 
areas. 
ANOPHELES PSEUDOPUNCTIPENNIS Theob. 
Anopheles pseudopunctipennis and its variety franciscanus occur in 
the Southwestern States and in tropical America. The species has 
been recorded in small numbers from Tennessee (57), the Mississippi 
counties of Humphreys (40), Attala, Hinds, Holmes, Leake, Madison, 
and Yazoo (7/0), and by the writers from Mound and New Orleans, 
La. It has recently been taken in Arkansas (table 1). A Tennessee 
specimen in the National Museum collection is labeled from Memphis. 
In general appearance this species resembles A. punctipennis, but the 
palpi are ringed and the wing pattern (pl. 5, Y) is different. No 
records of its breeding places in the lower Mississippi Valley are avail- 
able, but in the semiarid southwestern region it 1s most commonly 
found in river valleys in open, sunlit ponds containing algae and other 
vegetation. 
ANOPHELES ATROPOS D. and K. 
Little is known of the habits of this species, which breeds in the salt 
water of coastal marshes. In southern Louisiana, Mississippi, and 
Florida adult females have been taken while biting in the open during 
the day, even in direct sunlight (14, 65, 74, 107). In Florida adults 
were once noted on an open marsh during the day and were en- 
countered in large numbers after dark in two other localities. A few 
adults have been taken in light traps in several localities on the coast 
in southern Florida, and larvae have been obtained at various places 
in the State and at Parris Island, S.C. The species has been recorded 
by Fisk (45) from Key West, Fla., and the writers have a specimen 
from Elliott Key, Fla. (F. H. Stutz, collector, February 1941). The 
species has been recorded as far north as Maryland. 
Larvae were taken by Griffitts (65) in water ranging from 8 to 12 
percent “salinity” (about 0.8 to 3.4 percent of salt), by Hinman (74) 
in water containing 0.8 to 1.85 percent of salt, and by the writers, in 
Florida, in water containing more than 1 percent of salt. Although 
the larvae of atropos and bradleyi have occasionally been taken to- 
gether, the latter has usually been found in water of a lower salt 
content. 
