THE MOSQUITOS OF THE AMAZON 
REGION 
BY 
R. NEWSTEAD, M.Sc., A.L.S., etc. 
AND 
H. WOLFERSTAN THOMAS, M.D., C.M. (McGill) 
(Received for publication April 6 th, i<pio) 
(Plate XI) 
Reference has already been made in this report to the general 
breeding-places'of the various mosquitos encountered in A anao., 
Brazil (pp. 17-22). Dr. Thomas has also published a short 
preliminary note* on some of the Culicidae found by him in Iquitos, 
Peru; no details, however, are given, and the exact identifications ot 
the species at that period were not ascertained. 
The list of species recorded in this memoir embraces all the 
commoner kinds and a few that are new or noteworthy. It is hig y 
probable, however, that oilier mosquitos await the discoverer 111 a 
region so rich in insect life, but it has been impossible hitherto, o 
to pressure of official work, to extend the researches in t is ep 
ment of Zoology farther afield. 
Cellia argyrotarsis (R. Desvoidy), fig- 2. 
This is undoubtedly a ‘ domestic species, occurring spar’ g > 
the dwellings of man near the swamps both in the 'town & ■ 
environs. It is much less common than its near ally •a * 
from which it is readily distinguished by the absence o 
ring around the base of the terminal segment of the nnc _ 
Lancet, September 8, tt.oo, p. 668. 
