PLATE IV. 
The Scizenide. 
Report U. S. F. C. 1886.—Jordan & Eigenmann. 

The Drum (young). 
FIG. 10.—POGONIAS CROMIS Linnzus. 
(No, 18036, U. S. N. M., from Matanzas River Inlet, Florida.) 

The Drum (adult). 
Fic. 11.—POGONIAS CROMIS Linnzus. 
(No. 22936, U. S. N. M.) 

-water Drum, or Gaspergou. 
The Fresh 
Fic. 12.—APLODINOTUS GRUNNIENS Rafinesque. 
Michigan.) 
(No. 10542, U. S.N. M., from Ecorse, 
