ILLUSTRATED CATALOGUE 



MUSEUM OF COMPARATIVE ZOOLOGY, 



AT HARVARD COLLEGE. 



No. VII. 



REVISION OF THE ECHINI. 



BY 



ALEXANDER AGASSIZ. 

 PARTS I. -II. 



WITH FORTY-NINE PLATES. 



UNIVERSITY PRESS, CAMBRIDGE, 



WELCH, BIGELOW, & CO. 



*1872. 



