l^moirs jof tlje ||luscum of Comparatibe ^oblogn 



AT HARVARD COLLEGE. 

 Vol. XXXI. 



REPORTS ON AN EXPLORATION OFF THE WEST COASTS OF ISIEXICO, 

 CENTRAL AND SOUTH AMERICA, AND OFF THE GALAPAGOS ISLANDS. 

 IN CHARGE OF ALEXANDER AGASSIZ, BY THE U. S. FISH COiMMlSSlON 

 STEAMER " ALBATROSS," DURING 1891, LIEUT. COMMANDER Z. L. 

 TANNER, U. S. N. COMMANDING. 



XXXII. 



THE PANAMIC DEEP SEA ECHINI. 



By ALEXANDER AGASSIZ. 



ONE VOLUME TEXT, 



WITH ONE HUNDRED AND TWELVE PLATES, 



INCLUDING A CHART OF THE ROUTE, AND 319 FIGURES IN THE TEXT. 



TEXT. 



[Published by Permission of Marshall McDonald and Geouge M. Bowers, U. S. Commissioners 



of Fish and Fisheries.] 



CAMBRIDGE, U.S.A.: 



Prtnteti for tije iHuscum. 



1904. 



