SCIENTIFIC RESULTS 
OF THE 
EXPLORATION OF ALASKA. 
BY THE PARTIES UNDER THE CHARGE OF W. H. DALL, 
/ 
DURING THE YEARS 1865-1874. 
VOL. I. 
ARTICLE VI. On the Nudibranchiate Gasteropod Mollusca of the North Pacific 
Ocean, with special reference to those of Alaska. Second Part. 
By Dr. Rupo_rga Bera, COPENHAGEN. 
WASHENG TON, D. Cs 
JANUARY, 1880. 
