THE CANADIAN ENTOMOLOGIST. 189 



evidently made an accidental transposition when first looking up the 

 characters, and kindly sent me the results of his examination of the 

 species as represented in the National Museum, as follows : 



and suggested my transferring Murina, Elegans, Scepsiformis and Bolteri 

 to Euchaetes, and Eglenensis, Pudens, Oregonensis, Perlevis and Spraguei 

 to Pygarctia. But when I came to examine my series of Egle, and found 

 such an extraordinary range of variation both as to the presence or absence 

 of the cell, and also as to the venation, I came to doubt whether any of 

 these characters were sufficiently constant as to be of generic value. 



I found an occasional specimen lacking the accessory cell, and 

 several with it present on one side and absent on the other, as well 

 as great variation in the branching of the veins. 



When I had the pleasure of a visit from Dr. Dyar, April 23rd-2ath 

 1901, prior to his trip to Colorado, I showed him my series of Egle, and 

 from an examination under a microscope he kindly drew for me the 

 sketches from which the accompanying illustrations of venation have 

 been prepared. 



