672 
NATURAL HISTORY ILLUSTRATIONS. 
PREPARED UNDER THE DIRECTION OF LOUIS AGASSIZ AND SPENCER F. BAIRD. 
1849, 
F : Ve UN WoL Sip 
DEC 1 1891 
Nar ase 
SIX SPECIES 
OF 
¥ ag 
e: 
NORTH AMERICAN FRESH-WATER FIs 
SIX LITHOGRAPHS FROM DRAWINGS BY A. SONREL. 
EXPLANATION OF PLATES BY DAVID STARR JORDAN. 
CITY OF WASHINGTON: 
PUBLISHED BY THE SMITHSONIAN INSTITUTION. 
1889. 
