584 



handled, and the discovery of one single larva in a C-pile may prevent 

 great subsequent loss. Sometimes L. serricorne is already present in 

 fermenting sheds in baskets, piles, or bales of the previous year's 

 tobacco, and the infestation then becomes general. The duration of 

 the egg-stage was not ascertained. The pupal stage lasts only five 

 days, but the beetle remains for another five days within the cocoon. 

 Great variations in the number of progeny were observed. 



Infested tobacco used formerly to be sold as such at a low price or 

 burnt, but nowadays it is cleaned and sold in good condition. 

 L. serricorne is usually discovered when the piles of sorted-out tobacco 

 are broken out for baling. A mosquito-net chamber should at once be 

 erected over the infested pile and workers within it should search for 

 damaged leaves, larvae and beetles. A suitable reward should be 

 offered for the catches and all infested leaves should be burnt, while 

 the others are baled. All the bales must be fumigated with carbon 

 bisulphide in any building suited to the purpose, or one may be built 

 of planks, the size recommended being 32 feet long by 16 feet wide 

 by 8 feet high. For ensuring the destruction of the pest 300 c.c. of 

 carbon bisulphide per cubic metre should be used, or about 70 pints 

 for a disinfecting room of the size given. Great precautions must be 

 taken against fire in any form being brought near the room. The 

 fermenting shed must also be thoroughly freed from infestation. 



The necessity for all planters to adopt preventive and remedial 

 measures is insisted on, as perfectly sound bales may be infested on 

 board shijD. Quite recently larvae were found outside a sound bale, 

 in a tear near the seam of the covering. The mother-beetle had 

 apparently tried to enter the bale at that point and had deposited eggs 

 along the seam. 



LEGISLATION. 



Hewitt (C. G.). Regulations under the Destructive Insect and Pest 

 Act, with Instructions to Importers and Exporters of Trees, Plants 

 and Other Nursery Stock. — Canada Deft. Agric, Ottawa, Entom. 

 Circ. no. 10, 16th August 1917, 12 pp. [Received 4th December 

 1917.] 



This circular contains Regulations which have already been 

 published [see this Review, Ser. A, v, p. 479] and gives some 

 explanations and instructions for persons importing nursery stock into 

 Canada. The Destructive Insect and Pest Act of 1910 is quoted 

 verbatim. 



ENTOMOLOGICAL NOTICES. 



We regret to announce the death of Mr. C. W. Mason, Government 

 Entomologist in Nyasaland. 



Professor H. M. Lefroy is on his way to Australia in connection 

 with an investigation into the pests of stored grain. 



