Conclusion. —Anopheles larvae during this June survey were 
abundant in the live water of small streams and in marshes and pools 
adjacent to them, but were practically not found in the pool, except 
in the dead water of Creeks under conditions which implied that they 
were washed there from above. 
Practically all of the larvae developing into imagos from this June 
collection were A. punctipennis. Of about 600 Anopheles imagos 
developed two only—from the Slaughter Creek section—were A. 
quadrimaculatus. The same distribution of species—101 A. quadri- 
maculatus to 1,152 A. punctipennis —had been found in the survey 
of November, 1914. Of these A. quadrimaculatus all except 36 were 
found in one place—Paint Creek Bayou. In the latter part of May 
some imagos (all female) of this species (A. quadrimaculatus ), were 
taken in the guest house at the power plant. A careful search by Le- 
Prince and Carter was made for their breeding places. Imagos were 
developed from every collection of Anopheles larvae we could find 
within a mile of this house. All were punctipennis. It is always 
possible to miss a breeding place, but careful search was made 1 and 
it is thought that possibly these imagos might have hibernated from 
the previous year, especially as this form was not found developing 
from larvae in this section for nearly a month later. 
AUGUST AND SEPTEMBER SURVEY. 
\ 
This survey was begun August 18. A 3 or 4-inch rise of the pool 
had just occurred. Small as this rise was, it sufficed to strand a great 
deal of floatage. Where the banks were gently shelving, this was 
left well above the water and such banks were clean of floatage. 
The biological condition differed markedly from what the June 
survey had shown. As at that time, the live water and side pools 
and marshes adjacent to it were swarming with A. punctipennis 
practically in pure culture and many more than in June. The pond 
water, however, showed along with A. punctipennis a preponderating 
proportion of A. quadrimaculatus. In some bights, hammocks of 
drift had lodged. Where fine floatage and algae were mixed with 
this, larvae were found and at times in numbers. Thus in the bayou 
of Sulphur Creek near Talladega Springs many patches of fine float¬ 
age had lodged against .brush standing in the water, against logs, 
etc. On these patches algae were growing, and larvae were sheltered 
in practically all of them. The distribution of these two species of 
Anopheles can not be better illustrated than by this place. In the 
live water of the several branches of this stream and in the marshes 
feeding into them, the larvae of A. pwnctipennis were swarming. 
Only in one “ pot hole ” on a small branch did we find any A. quad- 
1 The search lasted for two days and two half days. 
