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Published online by Cambridge University Press: 31 May 2012
In the September (1893) number of the Canadian Entomologist, page 221, Mr. T. D. A. Cockerell described under the above name a Lecanium found at Ottawa upon an ornamental cedar on the Experimental Farm. Only a few specimens were found at that time upon three or four bushes of a shrub which we have tunder the name of Thuja Sibirica.