April, ’181 
COCKERELL: COLORADO MOSQUITOES 
195 
President R. A. Cooley: Do you wish to ask Dr. Headlee any 
questions or to discuss this paper? 
It has been of particular interest to me to listen to this paper, be¬ 
cause we are beginning to undertake mosquito work in Montana and 
the problem of migration is particularly acute in that state. 
I believe there are some interesting points in the paper which Pro¬ 
fessor Cockerell sent on and the Secretary is going to review one or two 
of them. 
THE MOSQUITOES OF COLORADO 
By T. D. A. Cockerell, University of Colorado 
More than a dozen years ago, when I was resident at Las Vegas, 
New Mexico, a prominent army medical officer appeared in town, to 
investigate the neighborhood as a possible site for a camp to which 
soldiers from the Philippines or the West Indies might be sent. The 
local merchants, always keen to extend their trade, wished to do every¬ 
thing possible to encourage the project. The officer, however, asked 
to see an entomologist, who might inform him whether Anopheles 
existed in the vicinity. I was accordingly called in, and testified that 
while I had met with Anopheles in the southern part of New Mexico, 
I had never seen any about Las Vegas. Scarcely had the officer de¬ 
parted, when I found Anopheles larvae almost under the windows of the 
big sanitarium at Las Vegas Hot Springs. It was of course my duty to 
inform the army authorities, but I was rather relieved to hear that be¬ 
fore my letter came it had been decided on quite other grounds not to 
place the camp at Las Vegas. The Anopheles was bred, and proved to 
be A. pseudopunctipennis Theob., quite new to that part of the world. 
This year the same general problem presented itself in another form. 
In the course of the war, it will be necessary to establish a number of 
recuperation camps, and of course these must be situated in the most 
favorable localities. On account of frequent infection with tubercu¬ 
losis, the drier regions of the west will prove especially beneficial. 
The malaria problem will be less important, but the absence of Ano¬ 
pheles is to be desired, to say the least. It will also be very desirable 
to place the camps reasonably close to commercial centers of distribu¬ 
tion, so that food and other materials may be obtained without undue 
cost. On all these counts eastern Colorado, with portions of adjacent 
states, may be especially recommended. I mapped the recorded dis¬ 
tribution of Anopheles from the data in the great work of Howard, Dyar 
and Knab, and found that the genus existed practically all over the 
United States, excepting apparently an area including eastern Colorado, 
