58 THE CANADIAN ENTOMOLOGIST, 



thence to inner margin, somewhat quadrate in form ; lines light gray, not 

 well defined, the basal with an outer angle ac middle and towards inner 

 margin ; outer line rounded from costa to centre, then angled outwardly, 

 then nearly straight to inner margin, all faintly serrate; discal spot distinct ; 

 outer line edged both sides with darker fuscous. Hind wings ochre- 

 fuscous, dark iridescent at apex. Beneath even dark fuscous, hind v/ings 

 somewhat lighter than fore wings. 



Charlotte Harbor, Florida. One ^ , from Mrs. Slosson. 



CANADIAN COCCID.^. 



III. A LECANIUM, PERHAPS IDENTICAL WITH L. RUGOSUM, SIGNORET. 

 BY T. D. A. COCKERELL, N. MEX. AGR. EXP. STA. 



I have just received from Mr. James Fletcher a small bottle 

 of scales found on plum at Queenston, Ontario. He writes con- 

 cerning them : " Dead scales picked from a plum tree in the Niagara 

 district, where it was very abundant on plums and much rarer on 

 peach trees growing amongst the plums." 



Directly I saw these scales, they struck me as something unusual, 

 and yet I rather expected they would prove to be some form of 

 Z. persiccs. Unfortunately they were full of the mycelium of a fungus 

 (doubtless Cordyceps), as well as in some cases containing a Chalcidid 

 parasite, so that their specific characters were very hard to make 

 out. The fungus, which must be a very important check to their 

 increase, was not noticed on examination with a lens ; but on 

 boiling the scales in liquor potassae, they stained the liquor brown, 

 and a microscopic examination showed the fungus quite plainly. 

 Of course, from mere mycelium no determination could be made. 

 I saw in one case what looked like germinating spores, but perhaps 

 in this I was mistaken. 



Assuming that the scales were not persicce, I went through the 

 descriptions to see what they would fit better. Lecanium rugosuin, 

 Sign., seemed the very thing, though comparison in detail revealed 

 some differences. 



The following information on Lee. rugosum was translated from 

 Signoret by my wife. I transcribe it for the use of those who 

 hav^ not the original ; 



