i 



DIVISION OF FISHES 

 U.S. NATIONAL MUSEUM 



HUmotrs of % Htuscum of Comjjaratibc loölogi) 



AT HARVARD COLLEGE. 

 Vol. XXX. No. 3. 



REPORTS ON AN EXPLORATION OFF THE WEST COASTS OF MEXICO, 

 CENTRAL AND SOUTH AMERICA, AND OFF THE GALAPAGOS ISLANDS, 

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

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

 TANNER, U. S. N., COMMANDING. 



XXXVI. 



EIN BEITRAG ZUR MORPHOLOGIE 

 DES TIEFSEEFISCHGEHIRNES. 



Von EMANUEL TROJAN. 



MIT SECHS TAFELN. 



[Publisked by Permission of Mahshall McDonald and George M. Bowers, U. S. Commissioners 



of Fish and Fisberies.] 



CAMBRIDGE, ü. S. A. : 



Printeö for tije Jluseum. 



OCTOBER, 1906. 



