34 INJURIOUS INSECTS OF I909 AND I9QIO. 
Making a total of thirteen sweepings across the field, and of 43 
adults collected in all. | 
It will be noticed by this table that there was a slight falling off 
in the number of specimens toward the further end of the field; 
but that, aside from this, the Empoasca adults were pretty evenly 
distributed over the entire field. This field of alfalfa was swept 
several times after this, in a similar manner, with the results given 
below. On June oth: 
Paces from orchard. Specimens of adults taken. 
10 14 
20 fi 
40 10 
60 13 
80 i 
100 2 
140 15 
120 ial 
160 12 
Making a total of nine sweepings in all, and 91 specimens taken. 
No nymphs at all were found in any of these sweepings. It will be 
again noted that quite as many specimens were taken at a distance 
from the orchard as close to it. 
On June 11th the field was swept again with following results: 
Paces from the orchard. Number of individuals found. 
10 37 
20 22 
40 19 
60 i, 
80 14 
100 12 
120 21 
140 18 
160 13 
164 24 
Making a total of ten sweepings and 192 specimens. 
On June 14th the results of the sweepings were as follows: 
No. of paces from orchard. No. of specimens taken. 
10 iy) 
20 23 
40 22 
60 14 
