ENTOMOHJGY. 315 



Mauy male uiotlis were uttracted and captured by plaeiug- in the fields 

 traps containing' artificially reared female motLs. 



A map is given showing the tract now infested by the moth. It is 

 believed that by continued action the practical extermination of the 

 moth will be Anally accomi)lished. 



Important insecticides, C.L. Maklatt {U. 8. Dept. Af/r., Farmers^ 

 Bui. 1!)^ pp. ;J(J). — Directions for the preparation and intelligent applica- 

 tion of remedies for insect injuries. For the i)urpose of classifying the 

 insecticides, insects are divided into several groups, based upon their 

 feeding habits, and thus differing more or less in remedial treatment. 

 These are (1) external feeders, comprising {a) biting insects, and (/>) 

 sucking insects; (2) internal feeders; (3) subterranean insects; (4) 

 insects affecting stored products; (5) household iiests; and (0) animal 

 parasites. Of these the external biters are to be combated by poison- 

 ing their food, which is best done by the application of the arsenicals, 

 Paris green, London purple, and arsenate of lead, usually by spraying, 

 but sometimes by dustnig on the dry powder. The external suckers 

 must be treated by the contact method, and either sprayed with the 

 kerosene emulsions or resin washes, or fumigated with hydrocyanic 

 acid gas. For subterranean insects are recommended kerosene emul- 

 sion, resin wash, potash fertilizers, bisulphid of carl)on, and submer- 

 sion by flooding the infected tract with water, as in the case of the 

 phylloxera in France. Bisulphid of carbon is advised for grain infested 

 by insects. Formulas and detailed instructions are given in each 

 instance. The centred of insects by cultural methods and clean farm- 

 ing IS briedy treated, and some statistics given of the profits accruing 

 from the use of remedial measures. 



The presence of arsenic in sprayed tobacco, A. M. Peter {Ken- 

 tncky Sta. Iipt. 1893, pp. 11, I'j). — To ascertain if tobacco plants which 

 had been sprayed with Paris green retained any of the poison when 

 marketed, 3 samples of leaf tobacco were analyzed, and appreciable 

 quantities of both copper and arsenic were found. Owing to the great 

 importance of the matter, the investigations are to be continued. 



Silkworms and how to rear them, K. W. McCulloch {Ann. L'pt. Ihpt. Agr. 

 Qutcnulanil, 1S02-93, pp. G'l-S.'), ph. 19). — Pojtular directions on the above subject. 



Injurious insects, C. P. Gillette {Colorado Sta. Tipi. isn3,pp. 51-55.) — Short notes 

 on the ravages, life history, and treatment of the recl-lejjged locust {MelanopJun feinur- 

 ruhrum), two-lined locust {M. limttatun), differential locust (.1/. differential is), cod- 

 ling niotL, leaf rollers {Cacaxia argyrospila and C. semiferana), garden webworm 

 {Loxusteye cereralis?), army worm {Leiicania nnipuncta), corn Avorm {HeUothis armi- 

 (jera), cutworms, woolly aphis (Schizoneura lanigera), onion thrijis {Thrips striaius?), 

 and potato-scab worm; and brief mention of the two-striped flea beetle {Syxicna 

 Uvniaia), black flea beetle {Phi/lloireta pusiUa), bee moth {Galleria mellonella), wax 

 or pollen moths {Plodia inierpunctella and Ephestia sp.), eight-spotted forester 

 {Ahipia octo-maculata), buffalo tree-hopper {Ceresa huhalus), red sjiider, and several 

 species of plant lice. 



Some common pests of the farm and garden, H. Gakmax {Kentucky Sta. Rpt. 

 1892, pp. 43-SS).—A reprint of Bulletin 40 of the station (E. S. K., 3, p. 792). 



