ECONOMIC ZOOLOGY ENTOMOLOGY. 557 



213-210; SI, pp. 230-23,3, figs. 6').— The symi)touis of infestation with phyl- 

 loxera are described and notes are given on tbe damage caused by this pest. 

 Infested vines may subsecjnently be attacked by fungi and Cocpopluujus 

 cchinopus. In the direct control of phylloxera the author tested the insecticide 

 recommended by Degenne and Deroin. It gave excellent results in all cases. 



Combating Eudemis botrana, J. Capus and Feyteaud {Prog. Agr. et Vit. 

 {Ed. VEst), 2S {1907), Xo. 40, pp. 409-^i-J).— Arsenicals and other insecti- 

 cides should be applied when the larvte are small. Arsenate of lead is very 

 efficacious. Tobacco decoction and whitewash were less satisfactory. Scraping 

 the bark in winter and spraying with Bordeaux mixture in spring gave good 

 results. 



Two unusual grape pests, V. Ma yet {Prog. Agr. ct Vit. {Ed. I'Est), 28 

 {1907), Xo. .'/O, pp. 'i00-.'i()3, pi. 1). — Psyche gramineUa and Agelastica alni are 

 reported as attacking grape leaves. Notes are given on the habits and life 

 history of these pests. 



Insects injurious to roses, A. L. Clement {Jour. 8oc. Nat. Hort. France, -J 

 scr., 8 {1907), pp. 160-16-3). — Biological notes are presented on Melolontha vul- 

 garis, earwigs, Athalia rosarum, Puvonia minor. TjiphJocyha roscc, etc. For 

 controlling the last-named insect a mixture of soap and pyrethrum powder is 

 effective. 



A method of destroying' the larvae of insects in tree plantations, M. Eber- 

 HARDT {Agr. Prat. Pui/s Chauds, 7 {1907), Xo. 51, pp. .331-.333). — In Indo-China 

 the larvae of longhorn beetles cause great damaige to tea, mulberry, and orange 

 trees. The branches or the ti;unk may be attacked. When the branches are 

 infested with the boring larvte the author recommends injections of a mixture 

 containing 110 parts formalin and 40 parts glycerin in S50 parts water, and 

 for the trunk a mixture containing ISO parts formalin and GO parts glycerin in 

 760 parts water. The mixtures are to be introduced into the galleries of the 

 insects by means of a syringe. 



A remedy for the spruce gall and larch blight diseases caused by Chermes, 

 E. II. BuRDOxX {Jour. Eton. Biol., 2 {1907), Xo. 2, pp. 6'.J-6'7 ) .— As a result of 

 continued experiments it is stated that spruce and other conifers may be en- 

 tirely freed from Chermes by spraying in winter with kerosene emulsion. At 

 this season this treatment does not injure the trees, as the leaves are mature 

 and withstand the insecticide, and the buds are protected by thick resinous 

 scales. Two formulas gave good results. The first contained 3 lbs. soap and 

 1 pint kerosene in 2 qts. water and was diluted before using by adding 5 gal. 

 of water. The other insecticide carried 1 lb. soft soap in each gallon of water. 



Parthenogenesis in Lophyrus pini, R. S. Macdougall {Jour. Econ. Biol., 2 

 {1907), Xo. 2, pp. Ji9--3o, pi. 1). — This sawfly lays its eggs chiefly on Scotch 

 pine and Austrian pine. The caterpillars eat the leaves and dwarf shoots. 

 There are 2 generations annually. In experiments in breeding cages it was 

 found that unfertilized eggs invariably produced male insects. 



A recently introduced borer-beetle, T. F. Dreyer {Agr. Jour. Cape Good 

 Hope, 31 {1907), Xo. 2, pp. I'lO, 1)1, figs. .3). — Phoracantha recurva, a native of 

 Western Australia, has been reporte<l in Cape Colony as injurious to eucalyptus. 

 Brief descriittive and economic notes are given regarding the i)est. 



Fumigation with hydrocyanic-acid gas for bedbugs, G. W. Herrick {Cunad. 

 Ent., 39 {1907), Xo. 10, pp. 3'fl-3'p3). — Fumigation has l)een successfully used 

 in a large dormitory. It has been found that 2 men can set off the charges 

 in 50 rooms in 15 minutes. The fumes killed bedbugs protected by 3 in. of ex- 

 celsior, 2 in. of cotton, thick wooii'ii blankets, etc. Eggs also seemed to be 

 destroyed effectively. The method is recommended as safe and reliable. The 

 cyanid was used at the rate of 1 oz. per 90 cu. ft. of space. 



