SPRING NUMBER 69 
In twenty-five dissections, however, all contained well de- 
veloped eggs, the number varying from 30 to 130, depending 
upon the size of the specimens, with an average of 80.5 eggs. 
In Table III is given the monthly average number caught 
per night in similar crocks situated on the southeast end of 
the porch at 203 West Ninth Street (Fig. 3la SE:c), and on: 
the right side of the door at 2300 West Hernando Street (Fig. 
Sl b:r). 
PRACTICAL USE OF TRAPS 
Traps of this nature may not rid a place of mosquitoes, nor 
even reduce the number enough to make them unobjectionable. 
But in favorable positions, they will catch large numbers and 
certainly could be used as a controlling factor. The average 
number caught throughout the year (September to May) by a 
single crock at 2300 West Hernando Street, was 33.9 per night. 
This would give a total of over twelve thousand for the year. 
Suppose one thousand houses in Gainesville should run two of 
the traps, one on the front porch and one on the back porch, 
for a year. This would rid the city of twenty-four million 
pests—I dare say more than have ever been killed by artificial 
means within the city in the last ten years. Certainly they 
are not so plentiful in Gainesville that these twenty-four 
million would not be missed. But even this is not all; each 
female caught during the winter and spring is cut off from 
becoming the progenitor of at least a thousand others during 
the summer. If every home would cooperate by running one 
or two of these traps, at least during the winter and early 
spring, the number of mosquitoes present would probably be 
greatly reduced. 
Such traps also afford a very convenient means for testing 
the efficiency of repellants and determining the relative abun- 
dance of mosquitoes at different seasons. 
SUMMARY 
1. All of the mosquitoes found at the University breed 
locally, but the breeding areas are small and could be drained 
with the expenditure of a small amount of money. 
2. Traps used for adults, when favorably located on porches, 
have caught an average of thirty-three mosquitoes per night 
for nine months. 
3. Crocks and boxes, black inside or lined with dark cloth, 
