FRESH-WATER FISHES OF NEW JERSEY. 111 
rhotheus, and we agree with him; but in addition he says 
the Cyprinus atromaculatus is the young of the S. corporalis. 
If such were the case then why are not the adult S. corpo- 
ralis abundant in the river in proportion to the presence of 
the young in the smaller streams? The true corporalis is 
scarce, very scarce, yet the atromaculatus is abundant. This, 
of course, is an absurdity; but these atromaculati are not 
young rhothei; that fish when young is wholly different in 
Fig. 32. 
Chub, Semotilus rhotheus. 
color, being wholly silvery on the sides and belly, the silver 
becoming roseate near the back, which is "deeply, darkly, 
beautifully blue." 
We have endeavored for several years to collect specimens 
of atromaculatus of all sizes, and so see where and when 
they cease to be atromaculatus and become true corporalis. 
We have as yet failed to do so, and have been somewhat 
disposed to consider it not the young of any species for these 
reasons. It is a peculiarly brook-loving species, hovering 
about deep holes, and most ingenious in its mode of eluding 
the pursuit of collectors. They are never found (that is, 
have not been by us) associated with the young of true 
“chub” as that fish is known. Their peculiar markings ren- 
der them at once distinguishable from the young of S. 
rhotheus, and the two love very different waters, the 
S. atromaculatus loving muddy bottoms, in which they 
