296 [November 



EXPLANATORY NOTE. 



Since the issue of the first part of this Synopsis, I have learned from 

 Mr. A. Agassiz that the species of Arctiada;, mentioned as collected by 

 him in California, were presented by him to the Mus. Comp. Zool. 

 under the condition that they should not be described, and moreover, 

 that some of the species were presented by T)r. Behr of San Francisco, 

 to the Cambridge Museum, with the understanding that no one but 

 himself was to work them up. 



Having published my notes upon these species, I should state in ex- 

 planation, that when I became a student in the zoological department 

 of the Lawrence Scientific School, Professor Agassiz placed the entire 

 collection of Bombycidae in my hands to study, and neither at that time 

 nor at any period until now, have I had any intimation from the Direc- 

 tor of the ^Museum, or learned indirectly from any label on the boxes 

 or insects themselves, that the insects were not exclusively and without 

 any conditions the property of the Museum. Also, I was entirely ig- 

 norant that any one but Mr. Agassiz had collected any of the specimens, 

 since, according to the best of my recollection, his name alone appeared 

 upon the labels as the collector. 



Through ignorance I have thus done an unintentional injustice both 

 to Mr. Agassiz and Dr. Behr, and take this opportunity of expressin"- 

 my sincere regret at having unawares used material which it seems 

 both of these gentlemen had reserved for their own use. 



