1918] ECONOMIC ZOOLOGY ENTOMOLOGY. 159 



in the spring on apricot and peach trees, is widely distributed in Europe and 

 North America. Its habits in Egj^pt are the same as in America. 



Aphis sprays, T. O. Moeeison ([Bicn.] Rpt. Dept. Agr. Wash., 2 (1915-16), 

 pp. 93, 94)- — Tests of a number of insecticides for the control of aphids led to 

 the conclusion that tobacco sprays are the most effective. Experiments carried 

 on with a view to lowering the cost of such applications have led to the con- 

 clusion that the effectiveness of blackleaf 40 is greatly increased by the addi- 

 tion of lime. 



Notes on Pediculus humanus (vestimenti) and P. capitis, A. Bacot (Brit. 

 Med. Jour., A'o. 2892 (1916), pp. 788, 7S9).— These observations, which are sub- 

 stantially noted from another source (E. S. R., 37, p. 850), deal with the habits, 

 length of life, and incubation of eggs of the body and head lice. 



Tobacco homworni insecticide: Recommendations for use of powdered 

 arsenate of lead in dark-tobacco district, A. C. Moegan (U. S. Dept. Agr., 

 Fanners' Bui. 867 (1917), pp. 10). — This supersedes Farmers' Bulletin 595 

 (E. S. R., 31, p. 454). It gives additional recommendations for the use of 

 powdered arsenate of lead in the conti'ol of the tobacco hornworm, based upon 

 the results secured by agents of the Bureau of Entomology working in coopera- 

 tion with tobacco growers in Kentucky and Tennessee. The use of diplumbic 

 arsenate of lead, guaranteed to contain at least 30 per cent of arsenic oxid, of 

 which not more than 1 per cent is free or water soluble, is strongly recom- 

 mended. 



The fall army worm (Laphygma frugiperda) in its relation to cranberry 

 bogs, H. B. ScAMMELL (Proc. Amer. Cranherry Groivers' Assoc, 1ft (1917), pp. 

 11-13). — A brief account of the attack of the cranberry in New Jersey by this 

 army worm. 



[Gipsy and brown-tail moth work in Massachusetts], F. W. Rane (Atui. 

 Rpt. State Forester Mass., 12 (1915), pp. Si-S5 ) .—Brief statements of the 

 work with parasites of the gipsy and brown-tail moths carried on by the U. S. 

 Department of Agriculture in cooperation with the State of Massachusetts are 

 given by L. O. Howard (pp. 81, 82) and A. F. Burgess (pp. 82-84). 



The invasion of cranberry bogs by the gipsy moth was the most serious new 

 development in connection with work with this pest. 



New microbe parasites of the caterpillar of the gipsy moth, A. Paillot 

 (Compt. Rend. Acad. Set. [Paris], 164 (1917), No. 13, pp. 525-527).— The author 

 has isolated three bacterial forms that attack the gipsy moth. These are (1) 

 a coccobacillus identified provisionally as that described in 1913 by Picard 

 and Blanc under the name Bacillus lymantrice (E. S. R., 30, p. 54) ; (2) a 

 gram-positive diplococcus which differs from that found in the cockchafer and 

 to which the author gives the name Diplococcus lymantriw ; and (3) a gram- 

 positive bacillus to which is given the provisional name Bacillus liparis. The 

 mortality resulting from B, lymantrice is very low, and D. lymantricB is only 

 mildly pathogenic, while B. liparis is more pathogenic than is D. lytnantriw. 



Measures employed in controlling the grapevine worm in Vaudois vine- 

 yards in 1916, H. Faes (Traitements Effectu^s dans le Vignoble Vaudois en 

 1916 contre le Ver de la Vigne (Cochylis). Lausanne: Sta. Vit. Lausanne, 1917, 

 pp. 23, figs. 4). — This is a report of control work with the cochylis moth. 



[Autonieris janus attacking cacao trees] (Dept. Agr. Trinidad and Tobago, 

 Bui. 16 (1917), No. 1, pp. 21-23, pi. 1). — A brief note on A. janus is given by 

 N. Lamont and a note on its parasite by F. W. Urlch. This moth is found 

 commonly in Trinidad on cacao trees and bois immortel (Erythrina umbrosa 

 and E. velutina). That it is not a source of greater injury is said to be due 

 to the presence of a tachinid parasite (Willistonia esuriens). 



