ENTOMOLOGY. 503 



Illufstrated notes are given of tlie imported elm leaf beetle {Galeruca 

 xanthomehvn<(), and spraying the trees with London purple or J^iris 

 green, 1 lb. to IGO gal. water, to which 1 gal. kerosene emulsion may 

 be added, is recommended as the best means for combating this pest. 

 There are two or more broods each year, and spraying must be regulated 

 accordingly. 



A report is given of the successful use of carbon bisulphid for ridding 

 cucurbits and caulitlower of plant lice and for the destruction of insects 

 in stored grain. 



Effectual experiments are reported on the use of arsenites for destroy- 

 ing blister beetles and curculio. Cage experiments were conducted with 

 baits impregnated with arsenite of soda, arsenite of lead, L(mdon purple, 

 Paris green, Fowler's solution, sulphate of strychnia, and white helle- 

 bore for the destruction of cutworms. All were effectual except the 

 last two. When applied to field tests it appeared that there was little 

 value in the use of poisoned baits for destroying the cutworms. Where 

 such means are employed it is advised that the baits be used jmor to 

 planting the corn on other crops. 



Entomological work for 1895, H. Osborn and C. W. Mally {loica 

 Sta. Bui. 32, pp. 361-407, pi. 1, figs. 11). 



Synopsis. — Notes are given on tlie chinch bug, four-spotted pea weevil, the early stages 

 of the imbricated snout beetle, the ground cherry seed moth, and insects occur- 

 ring in water tanks and reservoirs. 



The authors give charts of the distribution of the chinch bug {BKssus 

 leucopterus) throughout the State and the more general facts relative 

 to the life history and habits of the insect. Various remedies andjire- 

 ventive measures are suggested for keeping it in check, and numerous 

 insects resembling the chinch bug are figured and briefly described. 

 The control measures suggested consist of burning during hibernation 

 and the arrangement of crops with reference to catch crops in infested 

 fields 5 early cutting with burning or plowing of stubble; maintenance 

 of barriers between wheat, barley, or rye and oats or corn, and the 

 use of fungus parasites where possible. 



During the year an extensive experiment was conducted with the 

 white fungus disease of the chinch bug, in which 33 per cent of the 

 cases reported were considered highly successful. By earlier and more 

 complete distribution it is thought that the fuugus may be made 

 effective in a large number of cases. 



The four-spotted pea weevil [Bruchus quadri-maculatus) is figured 

 and described, the life history of the insect being given in considerable 

 detail. Experiments were conducted in treating seed with carbon 

 bisulphid for the destruction of the insect and to observe any possible 

 effect on the germination of the seed. The contained larva;, pupa', and 

 newly formed adults were not all destroyed by the treatment, and to 

 be most effective there should be 2 or 3 applications about 3 or -i weeks 

 110G8— Xo. 5 



