140 THE CANADIAN ENTOMOLOGIST. 



ranges, but they are all species, so far as I know, which are quite poly- 

 phagus, or such as have been distributed through the agency of man. 



This paper, together with others which his Lordship has previously 

 pubhshed, has done much to advance our knowledge of the North 

 American Micro-Lepidoptera, and we sincerely hope that he may continue 

 his very valuable work. 



CORRESPONDENCE. 



Dear Sir : Hickory, walnut and sweet gum have generally been 

 given as the food plants of Citheronia regalis, but I have a caterpillar 

 nearly ready to pupate which has been raised on sumach (Rhus copa/lina). 

 I offered it R/uis glabra, but it only nibbled the edges of a few leaves 

 and finally abandoned feeding until the other species was restored. A 

 friend, to whom I communicated these facts, also found a caterpillar of 

 regalis on R. copalliria. 



Wm. T. Davis, Tompkinsville, Staten Island, N. Y. 



COCOONS ON LILAC. 



Dear Sir : It would be interesting to know if the cocoons noticed 

 on lilac by Mr. Couper were really those of Hyperchiria io. I always 

 thought that the larva of io left its food plant when full grown and spun 

 its cocoon beneath old leaves and rubbish on the surface of the ground. 

 Might not Callasamia promethea have been the species observed by Mr. 

 Couper? F, B. Caulfield, Montreal. 



Dear Sir : In glancing through the June number (just received) of 



the ever welcome Entomologist, I notice that Mr. J. Alston Moffat 



speaks of a specimen of Callosamia angulifera taken at Ridgeway, Ont., 



as being two sizes larger than a specimen from New York. To me this 



expression is meaningless. I should be glad if Mr. Moffat would give us 



the measurement in inches. 



H. H. Lyman, Montreal. 



No. 5 issued July 29, 1884. 

 No. 6 issued September 18, 1884.) 



