NOTE. 



The quarto publications of the Museum will hereafter be issued 

 under the title of '-Memoirs of the Museum of Comparative Zoology." 

 In order not to commence a second series, the numbers of the Illus- 

 trated Catalogue already issued have been combined to form the 

 first volumes of these Memoirs. Title-pages and tables of contents 

 of the three volumes already completed are sent with the present 



number. 



ALEXANDER AGASSIZ. 



