560 EXPERIMENT STATION EECOED. 



Gi Lours, and all except one larva in 22 hours. Strychnin in dilutions greater 

 than 1 in 50,000 parts of water appeared to have no effect on larvse. 



lu experiments with the larvie of Anopheles hifurcatus, it was found that one 

 pai't Sanitas-Okol to 5,000 i)arts of water killed IS larvje out of 20 in 2\ hours, 

 the other 2 living for 3? hours. One part Sanitas-Okol in 10,000 parts of 

 water killed 23 larvfe out of 26 in 5i hours and the rest in about 8J hours. 

 Among the agents experimented with that gave poor results are mercuric 

 chlorid, cojjper sulphate, oxalic acid, and saponin. 



A catalogue of the Coleoptera {Coleopterorum Catalogus. Berlin, 1911, pts. 

 28, pp. 355-5S5; 29, pp. 87-190; 30, pp. 32; 31, pp. 8; 32, pp. 61; S3, pp. 96; 

 S'l, pp. 106; 35, pp. 94; 36, pp. 102).— In continuation of this work (E. S. R., 

 25, p. 158) part 28, by H. Gebien, takes up the Tenebrionidse, III ; part 29, by 

 M. Bernhauer and K. Schubert, the Staphylinidse, II ; parts 30 and 31, by K. W. 

 von Dalla Torre, the Cioidte and. the Aglycyderidse and Proterrhinidte, respec- 

 tively ; part 32, by E. Csiki, the Hydroscaphidse and Ptiliidie ; part 33. by K. W. 

 von Dalla Torre, the Nosodendridie, Byrrhidre, and Dermestidse; part 34, the 

 family Erotylidse, by P. Kuhnt, and the Helotidse, by C. Ritsema ; part 35, by J. 

 Weise, the Chrysomelidse : Hispinse ; and part 36, by M. Pic, the Anthicidse. 



Two apple tree borers, H. F. Wilson {Oregon Sta. Circ. 15, pp. 4). — This 

 circular consists of brief accounts of the flat-headed and round-headed apple 

 tree borers, with remedial measures. 



The dying hickory trees: Cause and remedy, A. D. Hopkins (U. S. Dept. 

 Agr., Bur. Ent. Circ. l-'i'i, pp. 5, figs. 4)- — Examinations made of hickory trees, a 

 large percentage of which have died in various sections throughout the northern 

 tier of States from Wisconsin to Vermont and southward through the Atlantic 

 States to central Georgia and to a greater or less extent within the entire 

 range of natural growth of the various species, have revealed the fact that the 

 hickory bark beetle (Scolytiis quadrispinosus) is by far the most imiwrtant 

 insect enemy concerned in their destruction. This circular gives information 

 by means of which the work of the pest may be recognized, and its habits and 

 remedial treatment are briefly considered. 



Remedial measures in general consist in locating and disposing of the hickory 

 trees within an area of several square miles, that have died during the previous 

 summer and fall, together with those of which part or all of the tops or large 

 branches have died. In order to destroy the broods of the beetle before they 

 begin to emerge, the work must be completed before the flrst to the middle 

 of May. 



The occurrence of Necrobia and Dermestes in cotton bales, J. Mangan 

 (Jour. Econ. Biol., 6 (1911), No. 4, irp. 133-138, figs. ^).— The author records 

 an infestation of bales of cotton to a depth of several inches by the larvtie and 

 adults of Neci'ohia ruflpes, Dermestes vulpinus, and D. frischi. The infestation, 

 which took place while the cotton was in transportation in holds of ships, was 

 due to a migration from hides, dried bones, etc. being carried by the vessel. 



The tobacco beetle and a method for its control (Lasioderma sp.), D. B. 

 Mackie {Philippine Agr. Rev. [English Ed.], 4 {1911), No. 11, pp. 606-G12, pi. 

 1, fig. 1). — This is an account of a cigarette beetle which has recently become 

 a very serious menace to the export tobacco trade in the Philippines, and of the 

 means by which it can be controlled. 



The bark beetles of northern and central Japan, Y. Niisima {Trans. Sap- 

 poro Nat. Hist. Soc., 3 {1909-10), pp. 1-18).— The Scolytid89 of Sachalin, Hok- 

 kaido, and Honshu are dealt with. See also a previous note (E. S. R.. 22, p. 557). 



Insect damage to standing timber in the national parks, A. D. Hopkins 

 {V. 8. Dept. Agr., Bur. Ent. Circ. 143, pp. 10). — This paper, which was read at 

 a conference of national park superintendents, September 11-12, 1911, deals with 



