238 THE CANADIAN ENTOMOLOGIST. 



to read yours and Mr. Grote's paper on Cerathosia tricolor Sm. If Mr. 

 Grote had looked into Lederer's Noctuinen Europa's he could read, p. 2, 

 ' sie (die Noctuinen) unterscheiden sich von den Lithosiiden (inclusive 

 JVola, Sarrothripa u. Nycteola,) und Arctiiden durch die bei diesen aus der 

 mitte oder zwei-drittel des vorderrandes der Mittelzelle entspringenden 

 Rippe 8 der Hinterfliigel.' 



" Mr. Grote would have spared much pain to prove something not 

 existing, by reasons which are not of any value, if he had remembered the 

 only important characteristic separating the Lithosiidtz and Arctiidce from 

 the Noctuidce. I am much surprised that so distinguished a writer as Mr. 

 Grote can omit so important a characteristic ; but the systematic position 

 of the genera of the so-called Zygcenidce, in his New Check List, is 

 sufficient to prove that Mr. Grote's systematic views are sometimes more 

 than singular. 



" Seeing the specimens of C. tricolor, my first thought must be : that 

 is a Genus very allied to Deiopeia (Utetheisa) and Emydia, and I 

 should have been much surprised if an exact examination had given 

 another result." 



CORRESPONDENCE. 



Dear Sir: In reference to my note on the use of Creolin, I found 

 subsequently discolorations on the leaves which did not appear to be 

 either rust or mildew, but possibly were the result of the Creolin mixture. 

 It is, however, probable that in this disinfectant we have a useful aid 

 against insects as it seems to be avoided by cockroaches and ants, and 

 probably woodwork might be preserved by it in greenhouses. I wished 

 merely to draw attention to Creolin, so that those interested might try it ; 

 my own opportunities for doing so being very limited. The rose-bushes, 

 of which I am very fond, seem on the whole no freer from insects in 

 Europe than in America. A. R. Grote. 



ARZAMA OBLIQUATA. 



Dear Sir : In regard to Mr. Brehme's query, I may mention that all 

 the Arzama larvae and chrysalids taken here have been found in similar 

 situations, but in no instance has there been the slightest indication that 

 they fed there. The impression made by my observations is ; — That the 



