300 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
EXPLANATION OF PLATE XLVI, 
Pig. 25. Side view of a youug specimen of tbe common sturgeon, 20 inches long. From a photograph. ji 
Fig. 20. Side view of youug specimen of the blunt-nosed sturgeon of the Delaware, J. brevirostris Les. ■ 
From a photograph. The recurved spines on the scutes are seen to be far less prominent i 
than in the preceding. 
