SUMMARY OF INSECT CONDITIONS DURING 1921. 33 



The area in Alabama is now bounded on the west by a line extend- 

 ing through the northwestern corner of Limestone County, through 

 the center of Colbert County to the eastern border of Pickens 

 County, thence southeastward to the northern border of Hale County, 

 and eastward along the northern boundary of Perry County, extend- 

 ing thence southward into the northern arm of Dallas County, and 

 eastward through southern Chilton and Coosa Counties, northern 

 Tallapoosa County, and the southern border of Randolph County. 



The infested area in Georgia extends southward to a line starting 

 at the southern border of Heard County, extending southeastward 

 into the northern corner of Troup County, thence northward through 

 the eastern border of Carroll County and eastward across the center 

 of Cobb County and the northern part of DeKalb County to the 

 northern border of Wilkes County, thence in a northwesterly direc- 

 tion through the center of Madison and Banks Counties and north- 

 eastward to the center of Stevens County. 



In Tennessee the infested area is bounded by a line extending from 

 the southeastern corner of Giles County, northeastward through the 

 center of Lincoln and Moore Counties, and northward across Coffee 

 and Cannon Counties, and eastward to the northwestern corner of 

 White County, thence across the southeastern corner of Putnam and 

 Overton Counties, along the western boundary of Fentress County 

 and the northern part of Scott County, and into Kentucky. It again 

 returns into the State in Campbell County and runs eastward 

 through L'nion and Grainger Counties, to the easternmost point in 

 Hamblen County; the line then extends southwestward along the 

 southern border of Hamblen County across the center of Jefferson 

 County and the eastern quarter of Sevier County to the southeastern 

 corner of the State. 



The northmost part of the Tennessee infestation is continuous with 

 a very small area in southern McCreary and Whitley Counties. Ky. 



The area in South Carolina extends across Oconee and Pickens 

 Counties and into Greenville County, and the area in Xorth Caro- 

 lina includes the greater part of Cherokee and Clay Counties. 



The shaded area on the map (Fig. 16) is the area in the East 

 known to have been infested in 1921. The solid-colored area was 

 known to have been infested in 1920. The dots indicate localities 

 from which this insect has been recorded in literature. 



Table 8 and Figure 17 contain data on the departures from the 

 normal temperature and rainfall in 1920-21 in the region infested 

 bv the Mexican bean beetle. 





