THE TOBACCO BEETLE. 77 



(87) Mackie, D. B. 



1916. Destruction of the tobacco beetle (Lasioderma serricorne). In 

 Trop. Agr. [Ceylon], v. 46, no. 3, p. 170-171. 



Results of experiments in fumigating cigars with carbon disulphid 

 in vacuum. Double fumigation required to free product entirely 

 from the pest. 



(88) Mason, C. 



1916. Report of the government entomologist. In Ann. Rpt. Dept. 



Agr. Nyassaland for the year ended 31st March 1916, p. 19-22. 

 Mention of the tobacco beetle. 



(89) Runner, G. A. 



1917. The tobacco beetle and how to prevent damage by it. U. S. Dept. 



Agr. Farmers' Bui. 846. 22 p., 7 fig. 



Description of the tobacco beetle, life history, habits, and 

 methods of control. 



(90) Davey, W. P. 



1917. The effect of X rays on the length of life of Tribolium confusum. 

 In Jour. Experimental Zool., v. 22, no. 3, p. 572-592. 



Mention of experimental work with X rays on Lasioderma serri- 

 corne. 



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