SEASONAL HISTORY. 



51 



SEASONAL PROPORTION OF SEXES. 



The most careful records of the sexes have been made in connec- 

 tion with the hibernation period. The records are presented here- 

 with in tabular form, grouping the specimens as hibernated weevils, 

 reared weevils taken during the spring and summer, and autumn 

 weevils which were about to hibernate: 



Table XVI. — Sex of hibernated boll weevils. 



Year. 



Locality. 



Male. 



Number. Percent 



Female. 



Number. Percent 



1902-03. 

 1903-04. 

 1903-04. 

 1905-06. 

 1905-06. 

 1906-07. 

 1906-07. 

 1906-07. 



Total 



Weighted averages. 



Victoria, Tex. 

 Calvert, Te.\ . . 

 Victoria, Tex. 

 Dallas, Tex . . . 

 Victoria, Tex. 

 Dallas. Tex... 

 Calvert, Tex.. 

 Victoria, Tex. 



269 



tn 



203 



173 



84 



1,668 



948 



l,0(i0 



5,045 



60.8 

 59.7 

 57.1 

 57.7 

 59. li 

 54.1 

 52.9 

 61. 3 



174 

 27 

 153 

 L27 



57 



1,412 



846 



1,049 



3,845 



39.2 

 40.3 

 42. 9 

 42.3 

 40.4 

 45.9 

 47.1 

 38.7 



Table XVII. — Sex of spring and summer reared, boll weevils. 



Year. 



Locality. 



Male. 



Number. 



Percent. 



Female. 



Number. 



Percent. 



1902. 

 1903. 

 1906. 

 1907. 

 1910. 



Total 



Weighted average. 



Victoria, Tex. 



do 



Dallas, Tex... 

 Overton, Tex. 

 Tallulah, La.. 



240 

 140 

 63 



48.0 

 53.1 

 44.7 

 47.4 

 54.7 



927 



260 



124 



78 



10 



393 



52.0 



46.9 



55.3 



52. 



45.3 



48.3 



Table XVIII. — Sex of autumn boll weevils ready to enter hibernation. 



