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. 
