34 MAINt: AGRICUI.TURAL E:XPERIME:NT STATION. I9O3. 



Six were able to walk about actively, while two were unable to 

 walk but could move their legs feebly. 



On February 14th two clumps of Jiincus were chopped out. 

 The first was three inches in diameter and contained fifty long- 

 winged bugs and ten short-winged ones. The second clump was 

 six inches in diameter and contained forty-two long-winged 

 forms and eight short-winged ones. 



On April 5th, after three weeks of mild and rainy weather, 

 thirty-six long- winged and twenty-nine short- winged forms were 

 taken from the under side of a piece of board two feet long and 

 five inches wide. They were clustered in groups and moved off 

 readily when disturbed. A few bugs were also found in clumps 

 of Jimcus and these were less active than those beneath the 

 board. 



On October ist, 1902, the chinch bugs were again found in 

 winter quarters in the same locality as during the fall of 1901. 

 Eighteen short-winged and two long-winged forms were shaken 

 out of a piece of J uncus clump. On October 1 5th four hundred 

 and twenty-nine short-winged and forty-four long-winged forms 

 were taken from beneath cedar debris and on October 31st fifty- 

 eight short-winged and fourteen long-w^inged forms were taken 

 from the same locality. 



Thus, of the five hundred and sixty-five bugs collected during 

 October, 1902, only sixty were long-winged. 



Of the seven hundred and sixty-three bugs collected during 

 the winter of 1901-1902 two hundred and forty-six were short- 

 winged, threp hundred and thirty-nine were long- winged anc 

 the remaining one hundred and eighty-eight were not examined 

 as to length of wings. 



The odor of the bugs collected and experimented with during 

 October seemed much stronger and more persistent than that 

 of bugs collected and experimented with during the winter. 



KXPERIME^NTS. 



In order to test the powers of the chinch bug to withstand 

 severe and unusual conditions, the following experiments were 

 made : 



Experiment i. Twenty long-winged and five short-winged 

 forms were frozen in an open box from January 17th to 23rd 

 when they were thawed out by a cold rain. None of them 

 showed any signs of life. 



