ECONOMIC ZOOLOGY ENTOMOLOGY. 63 



Recent results in the use of dust sprays for controlling the corn ear 

 worm, J. W. McCoLLOCH {Joxir. Econ. Ent., 8 (1915), No. 2, pp. 211-214).— The 

 author finds that the amount of corn ear worm injury can be greatly reduced by 

 thoi'oughly dusting the silks with arsenate of lead, 63 per cent arsenate of lead 

 being as effective as pure arsenate of lead. While the cost of this treatment is 

 prohibitive where corn is raised for corn and forage purposes, this treatment is 

 profitable where corn is grown for roasting ears, show purposes, or for seed. 



Observations and researches on the vine moths, M. Topi {Atti R. Accad. 

 Lined, Rend. CI. Sci. Fis., Mat. e Nat., 5. scr., 23 (1914), I, No. 12, pp. 981-984; 

 abs. in Internat. Inst. Agr. IRome], Mo. Bui. Agr. Intel, and Plant Diseases, 5 

 (1914), No. 10, p. 1379). — The author reports upon work in the control of the 

 hibernating pupae of Cochylis amhiguella and Polyclirosis hotrana carried on in 

 Piedmont, partly in collaboration witli F. Monticelli. 



In investigations of the extent to which the larvae use the tips of the sup- 

 porting canes for pupation, made in order to determine the value of tipping, 25 

 vines stripped during the winter resulted in the discovery of 19 pupse in the 

 canes, and 18 under the bark. If this is a general proportion the practice 

 would prevent the emergence of but half the moths, which is not a sufficiently 

 large proportion for a good control. 



An enemy of the strawberry near Beverwijk, T. A. C. Schoevers ( Tijdschr. 

 Plantenzicktcn, 20 {1914), No. 4, pp. 97-106; abs. in Rev. Appl. Ent., 3 (1915), 

 Ser. A, No. 4> PP- 194, 195). — Caterpillars of Sparganothis (Q^nophthira) 

 pilleriana are reported to have seriously damaged strawberries in the district 

 north of Haarlem. 



Defoliation by the beech bark caterpillar or red tail (Dasychira pudi- 

 bunda) in the wood at Elspeet, J. Ritzema Bos (Tijdschr. Plantenziekten, 20 

 (1914), No. 4, pp. 115-140; abs. in Rev. Appl. Ent., 3 (1915), Scr. A, No. 4, pp. 

 195-198). — Some 125 acres of beech wood at Elspeet are said to have been com- 

 pletely defoliated by this caterpiller in October, 1914. 



Biston hirtarius and methods of combating' it, N. Sachaeov (Alis. in Rev. 

 Appl. Ent., 3 (1915), Ser. A, No. 1, pp. 49, 50).— Caterpillars of B. hirtarius 

 were the source of considerable injury to quince trees in orchards in Astrakhan 

 during 1913, in many cases entirely defoliating them. The species is widely 

 distributed in Russia, and in Saratov and Astrakhan the caterpillars were 

 tilso found on oak, apple, and pear trees. A chalcidid parasite is said to have 

 destroyed from 18 to 22 per cent of them during 1913. The caterpillars and 

 pupae were also destroyed by Botri/tis bassiana, some 16 per cent of the former 

 and 18 per cent of the latter perishing from this fungus. 



Stenoptycha pinicolana on larches in the valley of Aosta, M. Savelli 

 (Abs. in Internat. Inst. Agr. [Rome], Mo. Bid. Agr. Intel, and Plant Diseases, 

 6 (1915), No. 2, p. 319). — This tortricid, first I'ecorded as causing serious damage 

 to larch wood at Argentera and Bersezio in the Province of Cuneo, Piedmont, 

 in 1901, occurred in large numbers on larches in the valley of the Aosta during 

 the summer of 1914. A description is given of its life stages. 



Pyralidse of Bermuda, H. G. Dyak (Insecutor Inscitiw Menstruus, 3 (1915), 

 No. 5-7, pp. 86-89). 



Additional data conceraing the control of the fruit-tree leaf-roller in 

 New York, G. W. Herkick (Jour. Econ. Ent., 8 (1915), No. 2, pp. 180-186).— 

 This is a report of observations conducted in continuation of work previously 

 noted (E. S. R., 27, p. 160). 



In cage experiments carried on indoors Target brand killed 94.7 per cent of 

 the eggs and Scalecide 96.2 per cent, whereas in the check 95.75 per cent of the 

 eggs hatched. In outdoor experiments on plum trees Target brand at 1 : 20 



