EXPLANATION OF PLATE XIX 
Fossil Fucoids from Pogibshi Island, near Kadiak 
Village, Alaska 
' Natural size 
Figs, i and 2. Gyrodendron emersoni gen. et sp. nov. Page 140. 
See also plate xvm. 
1. A slab containing several specimens in different stages of 
growth. 
2. Two specimens with thicker branches, possibly belonging to 
another species of this remarkable genus of fucoids. 
