19-4 THE CANADIAN ENTOMOLOGIST. 



came from a nursery in Pennsylvania. Judging from the appearance of 

 the infested twigs sent, they must be quite destructive. It has also been 

 destructive to oaks at Niagara Falls, Ontario. The species is common 

 at Washington, D. C., and is found at New York, Conn., and Mass., also 

 on oak. I have some from Germany, on oak, sent Prof. Cockerell. 

 Mytilaspis u/mi, L., are on the same twigs. 



Lecaniin^e. 

 Lecanium, Illig. 



Lecanium hesperidum, L., 1758. (Introduced.) This occurs as a 

 greenhouse species in Canada, in all the Provinces where greenhouse 

 plants are grown. It is a very common pest in Europe and the U. S. 



Lecanium pyri., Schr., 1781. (Introduced.) Found on apple on 

 Prince Edward Island in 1894. It is not as yet a very common species. 

 I have found it once in Mass. on pignut hickory. 



Bib. — Can. Ent., xxvi. (1894), 35. 



Lecanium antennatum, Sign. var. (Native.) Recorded from Jubilee 

 Point, Rice Lake, Ontario, on red oak, Quercus rubra. 



Bib. — Can. Ent., xxvii. (1895), 36. 



Lecanium juglandis, Bouche. (Perhaps introduced.) This was 

 received from Prof. Cockerell last year, marked on the label " on plum 

 at Queenston, Ontario." There is a scale infesting the plum trees in New 

 York, called L. cerasifex. Fitch. The one from Queenston is not that 

 species. 



L.ecanium quercitronis, Fitch, 1856. { Native.) Found on Quercus 

 coccinea at Ottawa, Canada. This is a common species throughout 

 North America. 



Bib. — Can. Ent., xxv. (1893), 221. 



Lecanium Fitchi, Sign., 1873. (Native.) Recorded from St. David's, 

 Ontario, on Lawton blackberry. This seems to be a species not well 

 denned, and will need further study when found on blackberry again. 



Bib.— Insect Life, vii. (1894), 30. 



Lecanium Fletcheri, Ckll., 1893. (Native.) Originally described 

 from specimens found by Dr. Fletcher at Ottawa, abundant on a hedge 

 of Thuja occidentalis and on trees of the same species at Stitts ville, Ont. r 

 15 miles from Ottawa. It was next found at New York by Mr. Pettit, 

 and next by the present writer in 1898 on Arbor vitce, at Lawrence, 

 Mass. Last year, in February, I received some scales on Thuja oc- 

 cidentalis from Vienna, marked n. sp., which proved to be L. Fletcheri. It 



