218 MOSQUITOES OF NORTH AMERICA 
“ Moreover Dr. H. E. Durham has since informed us that whilst he was study- 
ing yellow fever at Para, Brazil, he was much less bitten about the feet than 
was his late companion Dr. Myers. Dr. Durham wore ochre coloured socks, Dr. 
Myers black ones.” 
Further experiments upon color preferences have been made by Jordan and 
Hefferan (“Observations on the Bionomics of Anopheles,” Journal of In- 
fectious Diseases, vol. ii, No. 1, January 12,1905). Their results are as follows: 
“ Experiments were made to determine the color preference of adult A. puncti- 
pennis. The conditions of the experiment were substantially the same as those 
in a similar series of observations made by Nuttall upon A. maculipennis. The 
mosquitoes were confined under a large hood with glass sides and front. Boxes 
covered with different colored cloths of similar texture were placed under the 
hood, and every day at a fixed hour during a week the number of mosquitoes that 
had settled on each color was counted. The position of the boxes was changed 
every day after counting to eliminate possible influences of light and shade and 
other factors. The results were as follows: 
Number of Mosquitoes. On 
Dark red 
Dark blue 
Black 
Dark pink 
Dark green 
Lavender 
... Light blue 
. Pale green 
. Light pink 
... Yellow 
“These results with A. punctipennis are very much like those obtained by 
Nuttall with A. maculipennis, dark red and dark blue proving the most at- 
tractive in both cases.” 
BREEDING-PLACES OF ANOPHELES. 
Some observations bearing on this question will be found under the genus 
Anopheles in the systematic portion of this work. In the early investigations 
in America the larvae were found in more or less permanent pools of water in 
the bed of an old canal, in the side pools of spring-fed woodland streams, in the 
side pools or shallows of field springs, or in artificial excavations filled with sur- 
face water. In such places, especially when supplied with a certain amount of 
green scum, the little larvee were often found resting at the surface of the water, 
occasionally darting from one spot to another. They were also found in water 
contained in barrels and troughs, in fountain basins, but comparatively rarely 
found in the same water with the larve of Culex. Austen, in the report of the 
proceedings of the expedition for the study of the causes of malaria at Sierra 
Leone, states that on August 26, 1899, Doctor Prout and Doctor Berkeley found 
Anopheles larve mingled with those of Culex in a tub of water in a yard at the 
Sanitary Office. Aside from this and one other instance, Anopheles were always 
found breeding in roadside puddles and ditches. Nuttall, Cobbet, and Strange- 
ways-Pigg, in England, found Anopheles larve nine times with Culex in ponds, 
and also took them with Culea in ditches in which the water scarcely flowed, in 
