456 EXPERIMENT STATION RECORD. [Vol.40 



Trap crops, sticky shields, and driving will also help to reduce the amount of 

 injury. Known insecticides are of little or no value. Judicious pruning will 

 help reshape injured trees." 



The value of high temperature for controlling the common bedbug. A. 

 Gibson (Agr. Gaz. Canada, 5 (1918), No. 10, pp. 949-951, figs. 2). — The raising 

 of the temperature of infested rooms within 8.5 hours to not less than 145° I . 

 resulted in the death of all bedbugs present. The results ohtained confirm the 

 work of Ross, previously noted (E. S. R., 35, p. 658). 



A contribution to the physiology of wing development in aphids, G. O. 

 Siiix.il (Biol Bui. Mar. Biol. Lab. Woods Hole, 35 (1918). No. „'. ////. nr,-116).— 

 Among the ten species considered in this paper are Myzus //' rsica . Aphis bras- 

 siccr, Macrosiphum ulmarice, M. rosce, M. solanifoUce, and A. gossypii. 



Genetic relations of the winged and wingless forms to each other and to 

 the sexes in the aphid Macrosiphum solanifolii, A. V. Shvi.l (Amcr. Nat., 52 

 (1918), No. 622-623, pp. 507-520). — A report of studies of the pink and green 

 potato plant louse. 



The prevention and arrest of lice-borne diseases by new methods of dis- 

 infection, W. lliMKi; (Lancet [London], 1918, II, Nos. 11, pp. 347-351, figs. 8; 

 12, pp. 371 381, figs. 3).— This is an address delivered before the Royal So- 

 ciety df Medicine on July IT, 1918, by the president "f tin' advisory committee 

 for prevention of epidemic diseases in eastern war areas in 1915 1917. 



Notes on Japanese Lepidoptera and their larvae, I-V. A. E. VYiiim \\ 

 (Philippine Jour. Sci., Sect. D, 9 (19U), No. 3, pp. ..'/? 967, pis. 3; 10 (1915) { 

 Nos. 5, pp. 981 305, pis. S; 6, pp. •</•< 363, pit. 3; XI (1917), No. ',. pp. 929 .'/?. 

 pis. 2; !■'< (1918), No. /. ///>. 151-171, pis. 8).- -The several parts of this paper in- 

 clude descriptions and colored Illustrations of the larva" of 9, 11. 8, s . and s 

 species, respectih ely. 



Control work with the grapevine cochylis in Vaudois vineyards in 1917, 

 II. ETaes (Essais it Traitements Eflectue's dans i> Vignoble Vaudois contre U 

 Verdi in Vigne (Cochylis) en /:'/?. Lausanne: Sta. Vit. Lausanne, 1918, pp. 15, 

 figs. 8). — This is a report "i" experimental control work with electric lights and 

 Insecticides. 



The large aspen tortrix. Caccecia conflictana. X. Crtddle (Agr. Qaz. Canada, 

 5 (1918), No. 11, pp. 1049-1051, figs. 2). The small caterpillars of this lepldop- 

 teran appeared on aspen poplars in Manitoba during 1916, and became bo 

 numerous in a short time as to threaten seriously large numbers of the trees. 

 The caterpillar commences to devour the Leaves as soon as they bursl from 

 their buds, at first eating holes in them and soon after curling them by means 

 of silken wel.s, forming funnel or trumpet-shaped Inclosures within which in- 

 dividual lar\a> live and feed and later move to other leaves. A second sea- 

 son's attack is even worse than the first and is said to have been responsible 

 for much killing. 



A second species, Argyroploce duplex, which closely resembles C conflictana, 

 was also present ami a source of some of the injury. 



The origin of the pink bollworm, C. L. M \ki..\tt (Science, n. >< r.. .}s i 1918), 

 No. 1289, pp. 309-312).- This is a discussion by the chairman <>f the Federal 

 Horticultural Board of the origin of Pectinophora [Qelechia] gossypieUa, a 

 summarized account of which pest by Hunter has been previously noted (E. 3. 

 R., ■">!*, p. 764). The author finds that a scrutiny of the records ui\<^ strong 

 Support fo Hie theory that the pink bollworm originated in southern Asia. 

 probably in India. 



Walnut worm threatens industry. R. E. Smith (Cal. Cult.. M (1918), \ 

 18, pp. HI' 442, M7< fiffs- 6). — The author culls attention to the fact that a bio- 



