Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XLIII. No. 1. 



REPORTS ON THE DREDGING OPERATIONS OFF THE WEST COAST OF 

 CENTRAL AMERICA TO THE GALAPAGOS, TO THE WEST COAST 

 OF MEXICO, AND IN THE GULF OF CALIFORNIA, IN CHARGE OF 

 ALEXANDER AGASSIZ, CARRIED ON BY THE U. S. FISH COMMIS- 

 SION STEAMER "ALBATROSS," DURING 1891, LIEUT. COMMANDER 

 Z. L. TANNER, U. S. N., COMMANDING. 



XXIX. 



REPORTS ON THE SCIENTIFIC RESULTS OF THE EXPEDITION TO THE 



TROPICAL PACIFIC, IN CHARGE OF ALEXANDER AGASSIZ, ON THE 



U. S. FISH COMMISSION STEAMER "ALBATROSS," FROM AUGUST, 



1899, TO MARCH, 1900, COMMANDER JEFFERSON T. MOSER, U. S. N., 



COMMANDING. 



V. 



REPORTS O^ THE CEPHALOPODA. 



By William E. Hoyle. 



[Published by Permltslon of Marshall IMcDonald and George M. Bowers, 

 U. S. Fish Comiuiaaioners.] 



With Twelve Plates. 



CAMBRIDGE, MASS., U. S. A. : 



PRINTED FOR THE MUSEUM. 



Mauch, 1904. 



