STRAWBERRY ROOTWORM ON GREENHOUSE ROSES 47 
February the plants must be kept coated with an arsenical dust to 
poison any beetles which may come out of hiding and resume feed- 
ing. The soil in the beds should be kept covered with a layer of 
tobacco dust until drying-off time, with additional applications of 
wood ashes at monthly intervals. The tobacco dust will kill any 
newly hatched larve which come in contact with it while crawling 
on or entering the soil, and the mixture of wood ashes and tobacco 
dust will operate to some extent against the larve and pupe in the 
soil. To prevent the larve from entering the soil at an unprotected 
spot, it is important that the tobacco dust be spread over the entire 
surface of the soil in the bed. 
Plants and soil sheuld not be retained in the greenhouses longer 
than three years if the establishment of an infestation is to be pre- 
vented. In addition cleanliness, involving the removal of dead 
leaves and trash, must be practiced incessantly. Soil which is used 
in the beds should either be composted for several months or steri- 
lized before being brought into the houses. 
; LITERATURE CITED 
(1) ANONYMOUS. 
1920. Seek relief from new rose scourge. In Florists’ Review, vol. 
46, no. 1171, pp. 15-16, illus., May 6. 
(2) BLatTcHLey, W. S. 
1910. An illustrative descriptive catalogue of the Coleoptera or 
beetles (exclusive of the Rhynchophora) known to occur in 
Indiana. (Ind. Dept. Geol. and Nat. Resources Bul. 1.) 
1385 pp., illus. Indianapolis. 
(3) Brirron, W. Hb. 
1922. Twenty-first report of the State entomologist for 1921, Conn. 
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(4) CLAVAREAU, HENRI. 
1914. Junk’s Coleopterorum catalogus, pars. 59. 215 pp. Berlin. 
(5) Coox, A. J. 
1881. A new insect enemy. Jn 10th Ann. Rpt. See. State Hort. 
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(7) CrotcH, G. R. 
1878. Materials for the study of the Phytophaga of the United States. 
In Proe. Acad. Nat. Sci. Phila., vol. 25, pp. 19-83. 
(8) Desean, P. F. M. A. 
1833. Catalog des coléoptéres de la collection de M. le Comte Dejean, 
oe 3, 443 pp. Paris. (Same reference on p. 436 of ed. 4, 
1837.) 
(9) Faprictius, J. C. 
1801. Systema Eleutheratorum, vol. 2. 687 pp. Kiliae. 
(10) Kerr, BE. P. 
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Mem. 8, vol. 2, pp. 333-877, illus. 
(11) FLetcHer, JAMEs. 
1894, Injurious fruit insects of the year 1894. In 25th Ann. Rpt. Ent. 
Ae) Soc. Ontario, 1894, pp. 76-81, illus. 
1895. Report of the entomologist and botanist. In Rpt. Exp. Farms 
[Canada] f. 1894, pp. 183-226, illus. Ottawa. 
(18) Forspss, S. A. 
1884. Insects injurious to the strawberry. In 13th Rpt. State Ent. 
... Illinois (or 2d Ann. Rpt. of S. A. Forbes for the year 
1883), pp. 60-180, illus. Springfield, Il. 
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