BuL. U. S. B. F., 1908. 



Plate CXXXI. 



General label defining class Pisces. Framed copies of this label are placed in various parts of the fish hall. The figure of the 

 mackerel at the top is drawn in by hand. A dilTerent species is represented on each copy of the label, corresponding to the fish 

 forms near which it is placed. 



