^moirs of l^e gluscum of Compuratibc ^oolojgn 



AT HARVARD COLLEGE. 



Vol. XXXIV. No. 1. 



HAWAIIAN AND OTHER PACIFIC ECHINI. 



THE CIDARID^. 



BY 



ALEXANDER AGASSIZ and HUBERT LYMAN CLARK. 



WITH FORTY-FOUR PLATES. 



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



CAMBRIDGE, U.S.A.: 

 ^Irtntetr for tije jHuseum. 



February, 1907. 



