Umotrs of % Ulustum of Compnitibt ^oblocjn 



AT HARVARD COLLEGE. 

 Vol. XXXIV. No. 3. 



HAWAIIAN AND OTHER PACIFIC ECHINI. 



THE ECHINOTHURID.E. 



BY 



ALEXANDER AGASSIZ and HUBERT LYMAN CLARK. 



WITH THIRTY PLATES. 



Plates 60-89. 



[Published by Permission of George M. Bowers, U. S. Commissioner of Fish and Fisheries.] 



CAMBRIDGE, U. S. A. : 



^rintco for tljc ifluscum. 

 November, 1909. 



