140 THE CANADIAN ENTOMOLOGIST. 



bush, which would have afforded a splendid harbour for the larva, yet no 

 signs of any cocoon or silk were found on it. 



In all cases where I have bred Telea they have attached the leaves 

 and cocoon to the stem with a silken band, which usually entirely 

 surrounds the stem for a distance of over an inch. 



I have collected from 2 to 4 dozen of these cocoons each winter for 

 the past three years, and occasionally have found them only very 

 insecurely attached, but in every case where they have been spun 

 amidst a bunch of fallen leaves, they have had the added protection of 

 being fastened to some twig. 



Last fall I discovered two cocoons, from which the moths had 

 prematurely emerged, and these were both securely fastened to the end 

 of the twigs. 



I shall read with interest all contributions on the subject, as this 

 peculiarity may only apply to western America. 



J. Wm. Cockle, Kaslo, B. C. 



BOOK NOTICES. 



A List of North American Lepidoptera, and Key to the Literature 

 of this Order of Insects. — By Harrison G. Dyar, Ph. D. Bulletin of 

 the United States National Museum, No. 52. Washington, D. C, 

 Government Printing Office, 1902. i vol. 8vo.; pp., xix., 723. 



Students of Lepidoptera throughout North America have been 

 looking forward with great interest to the publication of Dr. Dyar's 

 List, and have been full of hope_ that it would afford them an 

 authoritative and final settlement of the nomenclature of our butterflies 

 and moths, which for many years has been in a state of change and 

 instability. "We fear that this hope will be seriously disappointed. 

 The changes in many instances appear so arbitrary, the multiplication of 

 genera so inordinate, the absolute extinction of many familiar names so 

 far from necessary, that the ordinary student will feel much hesitation in 

 adopting this List as his guide, and unlearning so much that he has known 

 regarding the names of his specimens. He will naturally be inclined to 

 think that the List cannot be final, and that it will be safer for him to wait 

 for further developments before he changes a large proportion of the labels 

 in his cabinet and fills his notebooks with new names, 



