66 PAPERS OX THE COTTON BOLL WEEVIL. ETC. 



borers go 2 or 3 inches below the surface of the ground in the tap-root 

 and pupate there. In regions infested by the boll weevil, if the 

 farmers would follow the directions given by this Bureau for the 

 destruction of stalks, the cotton stalk-borer would not appear. In 

 regions uninfested by the boll weevil but infested by the cotton stalk- 

 borer, an occasional examination of infested areas for the emergence 

 holes of the borer or an examination of the stages in the stalk— which 

 can be made by splitting the stalk with a knife — will show the planter 

 when to begin plowing and burning. 



BIBLIOGRAPHY. 



1832. Say, Thomas. — Insects of Louisiana, pp. 5 and 6, and Entomology of North 

 America (Le Conte, ed.), vol. 1, p. 302. 

 Original description under the name of Lamia crypta. 



1S47. Haldemax, S. S.— Trans. Amer. Phil. Soc, vol. 10, p. 56. 

 A description of the insect under the name Ataxia sordida. 



1878. Schwarz, E. A.— Coleoptera of Florida. <Proc. Am. Phil. Soc, Vol. XVII, 



p. 457. 

 1883. Le Conte, J. L., and Horx. G. H. — Classification of Coleoptera of North 



America, p. 329. 

 Authority for present nomenclature. 



1885. Bates, H. W. — Biologia Centrali-Americana, vol. 5, p. 347. 

 A short note upon synonymy. 



1896. Howard, L. 0.— Bui. 33, Office of Experiment Stations, p. 347. 



First economic note. 



1S96. Lexg, Chas. TV, and Hamiltox, Johx. — The Lamiina? of North America. 

 <Trans. Am. Ent. Soc. Vol. XXIII, p. 143. 



1897. Howard, L. 0.— Farmers' Bui. Xo. 47, U. S. Dept. Agric, p. 28. 

 1899. Saxdersox, E. D.— Cotton Planters' Journal, May, 1899. 



1902. Saxdersox, E. D.— -Insects Injurious to Staple Crops, pp. 197, 198. 



1905. Saxdersox, E. D.— Farmers' Bui. Xo. 223, U. S. Dept. Agric, p. 17. 



1906. Saxdersox, E. D. — Bui. Xo. 57. Bureau of Entomology, U. S. Dept. of Agric, 



p. 38. 



