Ulcmoirs of the Jthtscum of (!"ump;u;ititic .toologn 



A 1 H A B V A IID COLLEG I. 



Vol. XVII. No. 2. 



REPORTS ON \N EXPLORATION OFF THE WEST COASTS OF MEXICO, 

 CENTRAL WD >o| m AMERICA, AM) OFF THE GALAPAGOS ISLANDS, 



IN CHARGE OF ALEXANDEK AGASSIZ, BY THE I. s. its AMISSION 



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

 TANNER, U.S.N., COMMANDING. 



I. 



CALAMOCRIXUS DIOMEDjE, 



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 McDonald. U. S. Commissioner 

 of Fish and Fisheries.] 



CAMBRIDGE. U.S.A.: 



ISrtntrti for tiir fHusrum. 

 January, 1892. 



