Icmoirs of tjjc ^usnim of Comparatibc i^oijlogi) 



AT HARVARD COLLEGE. 



Vol. XVII. No. 2. 



RKPORTS ON AN EXPLORATION OFF THE WEST COASTS OF MEXICO, 

 CENTRAL AND SOUTH AMERICA, AND OFF THE GALAPAGOS ISLANDS, 

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

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

 TANNER, U. S. N., COMMANDING. 



I. 



( ( n 

 CALAMOCRINUS DIOMEDiE, 



A NEW STALKED CRINOID, 



WITH NOTES ON THE APICAL SYSTEM AND THE HOMOLOGIES OF 



ECHINODERMS, 



By ALEXANDER AGASSIZ. 



WITH THIRTY-TWO PLATES. 



[Published by permission of Marshall McDoxald, U. S. Commissiouer 

 of i'ish and Fisheries.] 



CAMBRIDGE, U.S.A.: 



^rtntetJ for ttje iluseum. 



January, 1892. 

 S '^- 



