THE CANADIAN ENTOMOLOGIST. 195 



was next found by me on August 13, 1900, at the Harvard botanical 

 gardens, Cambridge, Mass., on Thuja occidentalis var. The lot described 

 from, by Prof. Cockerell, were parasited by a Chalcidid. Those which 

 Dr. Fletcher sent me were also parasitized. 



For a record of the excessive abundance of parasites of this species, 

 see L. O. Howard, Bull. VII., N. S, Div. Ent. U. S. Dep. Agr., 1897, 

 p. 62-63. 



Bib. — Can. Ent., xxv. (1893), 221 ; 29th Ann. Rpt. Ent. Soc, 

 Ontario (189S), 8S ; Can. Ent., xxxii. (1899), I 4 I '■> Psyche, viii. (1899), 

 349; Psyche, ix. (1901), 154. 



Lecanium Canadense, Ckll., 1895. (Native.) Originally described 

 from Stittsville, Ont, about 15 miles from Ottawa, on Ulinus racemosa ; 

 received also from Nappan, Nova Scotia, on Ulmus Americana. The 

 scales from Stittsville were affected by a Coccinellid (Scymnus 

 piautatus) and an Encyrtid parasite. This species has proved a serious 

 enemy of Ulmus Americana at Ottawa. Dr. Fletcher has received 

 specimens also from Brandon, Man. The scale has since been found in 

 Maine and Mass. The species was described as L. caryce, var. Canadense, 

 but by further study in 1898, Prof. Cockerell decided that it was a 

 distinct species. 



Bib. — Can. Ent., xxvii. (1895), 253; xxx. (1898), 294; The In- 

 dustrialist, April, 1899, p. 232. 



Lecanium pseudhesperidum, Ckll., 1895. (Nativity unknown.) 

 Described from specimens found in a greenhouse at Ottawa, Canada, 

 Dec. 15, 1894, on a Cattleya. Au/acaspis Boisduvalii was found on the 

 same plant. 



Bib. — American Naturalist, April 1st, 1895, p. 381. 



Zecanium mac/urarum, Ckll., 1898. (Native.) Described from 

 material collected near Niagara, Ontario ; rather abundant on twigs of 

 Osage orange, June 17, 1898. 



Bib. — Can. Ent., xxx. (1898), 294; The Industrialist, April, 1899, 

 236. 



Lecanium caryarum, Ckll., 1898. (Native.) Described from 

 specimens found on Carya alba, at Niagara, Ontario, June 17, 1898, and 

 said to be very abundant. 



Bib. — Can. Ent., xxx. (1898), 293 ; The Industrialist, April, 1899, 

 P- 233. 



Lecanium nigrofasciatum, Perg., 1898. (Native.) The Peach 



