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1921. Report of the entomologist [of the Society of American Flo- 
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JACOBY, MARTIN. 
1882. Biologia Centrali-Americana Insecta Coleoptera, vol. 6, pt. 1. 
625 pp. London. 
JUNGE, HERMAN. 
1921. Battling rose beetle. In Florists’ Review, vol. 48, no. 1229, pp. 
17-18, June 16. 
Le Conte, J. L. 
1858. Description of new species of Coleoptera, chiefly collected by 
the United States and Mexican Boundary Commission under 
Maj. W. H. Emory, U. S. A. Jn Proc. Acad. Nat. Sci. Phila., 
vol. 10, 1858, pp. 59-89. 
LENG, C. W. , 
1920. Catalogue of the Coleoptera of America, north of Mexico. 470 
pp. Mount Vernon, N. Y. 
OLIVIER, A. G. 
1808. Entomologie ou Histoire Naturelle des Insectes, vol. 6, pp. 613- 
1104, illus. Paris. 
PETERSON, ALVAH. 
1921. The strawberry rootworm, a serious pest of roses in the green- © 
house. Jn 41st Ann. Rpt. N. J. State Agr. Exp. Sta., and 33d 
Ann. Rpt. N. J. Agr. Coll. Exp. Sta. for the year ending June 
30, 1920, pp. 468-493. 
&é Pur...” ; 
1921. Progress of the battle. In Florists’ Review, vol. 48, no. 1235, 
DeLay uly 28. 
SANDERS, J. G. 
1920. Strawberry root-worm injuring greenhouse roses. Jn American 
Rose Annual, pp. 69-70. Harrisburg. 
Say, THOMAS. 
1823-4. Descriptions of coleopterous insects collected in the late expe- 
dition to the Rocky Mountains performed by order of Mr. 
Calhoun, Secretary of War, under the command of Major 
Long. In Jour. Acad. Nat. Sci. Phila., vol. 3, pp. 189-216, 
238-282, 298-331, 403-462; vol. 4, pp. 83-99. Also im his 
Complete Writings on the Entomology of North America, 
Le Conte ed., vol. 2, pp. 89-2386. New York, London, etc., 
1859. 
SWENE, M. H. 
1909. The principal insects injurious to horticulture during 1908-09. 
In 40th Ann. Rpt. Nebr. State Hort. Soc., pp. 75-128, illus. 
WEBSTER, EF. M. 
1893. Insects affecting the blackberry and raspberry. Ohio Agr. Exp. 
Sta. Bul. 45, pp. 151-217, illus. 
WEIGEL, C. A. 
1920. A serious menace to eeebnneuKe roses. In American Rose 
Annual, pp. 66-69, illus. Harrisburg. : 
WEIGEL, C. A., and CHAMBERS, HE. L. 
1920. The strawberry root-worm injuring roses in greenhouses. In 
Jour. Econ. Ent., vol. 13, pp. 226—231. 
WEIGEL, C. A., and Doucette, C. F. 
1922. Further observations on the strawberry root worm on roses. 
In Jour. Econ. Ent., vol. 15, pp. 204-209. 
1923. Control of the strawberry rootworm in commercial rosehouses. 
In Jour. Econ. Ent., vol. 16, pp. 283-288. 
O 
