338 Report of the Entomologists of the 



Use green arsenite or other equally good arsenical, 1 pound 

 to 100 gallons of water, with the addition of enough freshly-slaked 

 lime to make the mixture slightly milky in appearance. One 

 pound of whale oil soap to about 20 gallons of the mixture may 

 be added with good results. It will do no harm to use the soap 

 stronger. 



Spray newly-planted fields with the poison until the willows are 

 large enough for the machines. 



After the willows are too high to spray thoroughly by ordinary 

 means, use the machines for catching the insects if necessary. 



Urge the importance of a united effort on the part of all inter- 

 ested in willow growing. 



PARTIAL BIBLIOGRAPHICAL LIST. 



1884. Riley, C. V. U. S. Dept. Agr. Ann. Kept. 1884: 33G-340. Refers 

 to damage done in 1884, food plants and former injuries; life history; rem- 

 edies, arsenical*, London purple and Paris green, and descriptions of type 

 and variations. 



1888. Ma cM ilia 11, Conway. Nebr. Agrl. Exp. Sta. Bui. 2: 50-54. Life 

 history; remedies. Illustrated. 



Meehan, Thos. B. Insect Life, 1: 51. Letter from, stating in- 

 juries caused by the Avillow beetle in 1887 to Carolina poplar, Kilmarnock 

 and New American willows growing in his nursery at Germautown, Pa. 



1889. Lugger, Otto. Minn. Agrl. Exp. Sta. Bui. 9: 53-55. Life history 

 and brief descriptions of larva and imago; remedies, arsenicals; natural 

 enemies. Illustrated. 



Orcutt, I. II. Dak. Agrl. Exp. Sta. Bui. 13: 14-15. Brief descrip- 

 tions of larva and imago; remedies, arsenicals; natural enemies. Illus- 

 trated. 



1890. Kent, Geo. II. Insect Life, 3: 338. Quite numerous and destruc- 

 tive on Cottonwood in Franklin county, Miss. 



1891. Brunei-, L. Nebr. Agrl. Exp. Sta. Bui. 14: 84-91. Descriptions 

 of larva and imago; life history; remarks on causes of increase; geo- 

 graphical distribution: natural enemies, several species of Carabid?e and 

 Coccinellidse; remedies, arsenicals. 



1891. Orcutt, I. H. S. Dak. Agrl. Exp. Sta. Bui. 22: 9S-101. Life history; 

 brief description of larva and imago. Illustrated, i 



Riley, C. V. Insect Life, 3: 430, in report of Proceedings of 

 Entomological Society of Washington; larvae and pupa? of Lina scripta 

 eaten by Megilla maculata. 



Aldrich, J. M. Insect Life, 4: G7. Abundant in South Dakota, 

 seems to prefer New Russian poplars; can be controlled by arsenicals. 



