^moirs of i^t glus^um of Comparatibc ^oblogn 



AT HARVARD COLLEGE. 



Vol. XXXIV. No. 3. 



HAWAIIAN AND OTHER PACIFIC ECHINI. 



THE ECHINOTHURIDJE. 



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. : 



?Prtntetr for tlje fHuscum, 



November, 1909. 



