Boll weevil hibernation results.--G. L. Smith and assistants, 
Tallulah, La., report as follows: "The emerging boll weevils were removed 
‘daily from the 70 hibernation cages during June. The peak of emergence 
occurred between June 1 and June 15 in the 60 cages located in the open 
field on the laboratory grounds, but the peak was reached between June 15 
and June 30 in the 10 cages located in the timber; 10.27 per cent of all 
the weevils emerged during May and 7.94 per cent during June. However, 
6.77 per cent emerged between June 1 and June 15, and only 1.17 per cent 
from June 15 to June 30. The total emergence during May and June was 
18.21 per cent. * * * There was a little higher emergence from the 
Spanish moss than from cornstalks in the October 15 installation, but the 
emergence was somewhat higher from the cornstalk shelter in the October 31 
and November 14 installations. * * * It is also apparent that the total 
emergence of weevils from both shelters for the three installation dates 
(October 15, October 31, and November 14) was 12 per cent, 17.79 per cent, 
and 26.25 per cent, respectively. Comparing Spanish moss with leafage 
as Shelter, the cages being located in timber, the emergence was much 
higher from the leafage shelter, the moss running lower than in the open 
field cages. The peak of emergence was 15 days later in the timber cages 
than in the open field cages." 
INSECTS AFFECTING MAN AND ANIMALS 
Sand-fly laboratory moved.—-W. E. Dove reports that the field lab— 
oratory which has been located at Charleston, S. C., was moved at the 
close of the fiscal year to the new Post Office Building at Savannah, Ga. 
Habits of larvae of the throat botfly.--E. F. Knipling, Galesburg, 
tll., reports as follows on the habits of ingress of newly hatched lar— 
vae of Gastrophilus nasalis L.: "Repeating tests made last summer, 30 
newly hatched larvae were placed under the jaw of a horse, on the hair, 
about 8 inches above the mouth. They immediately disappeared among the 
hair. Within 10 minutes they began to appear in the short hair around 
the lower part of the jaw and within 15 minutes some were entering the 
mouth; 9 of them were observed to reach the mouth: and 4 of them dropped 
to the ground, These larvae were extracted from well-—incubated eggs 
and it is likely that some were below normal in vitality. None appeared 
to make any attempt to penetrate the skin. To determine that they in- 
variably migrate downward instead of upward, we placed 16 such larvae on 
the neck of the horse, just above the breast. Above and below this lo- 
cation we had clipped short the hair in narrow horizontal strips so that 
we could observe the larvae crossing. Within a minute or two they began 
to cross the lower clipped strip until we had counted 10. None appeared 
in the upper strip and none appeared to try penetration. We conclude 
that this species normally migrates from the egg downward to and into 
the mouth." 
