718 FURTHER NOTES ON NEW JERSEY FISHES. 
fessor Cope of Philadelphia, he pronounced it undescribed, 
and has since described it* as Hybognathus osmerinus. 
During the past summer the author had no opportunity of 
fishing in the Raritan River, at or about New Brunswick, at 
which point the specimen was taken; but among a number 
of small collections from that river, no specimen of this 
cyprinoid occurred. From other streams, generally not in 
the basin of the Raritan, isolated specimens have occurred, 
and the distribution seems to be without reference to salt 
water, although the type, and two other specimens, were 
taken from streams having direct access to the sea. 
Of its habits, as yet, we have determined nothing; only 
learning from the specimens we have seen, that it seems to 
be very scarce, and associated by twos and threes with other 
cyprinoids, more especially with Hybopsis Hudsonivs, which 
is very abundant in many of our smaller streams, as well 
as the Delaware River. 
During the month of August of this year, the writer found 
a locality for two species which are not abundant elsewhere, 
so far as his own observations go to show, These fish are 
an etheostomoid ( ololepis erochrous Cope), and a “cat-fish” 
( Noturus gyrinus). They were both found abundantly 
in Stony Brook, Mercer Co., N. J., near the village of 
Princeton. The stream here is shallow, with a muddy bot- 
tom, and here and there a flat stone or two, under which 
both species took refuge when disturbed. On approaching 
the brook, the fish were found to be lying on the mud, near 
the edge of the stream, in water scarcely two inches deep. 
The movements of the etheostomoids were very deliberate, as 
they usually moved very slowly, making straight lines on the 
mud, apparently by not lifting themselves from the bottom of 
the stream. By placing a small baited hook immediately in 
front of the “darters,” they would seize it with all the ra- 
pidity and voraciousness of a pike, and upon swallowing it, 
ap Mere 
* A Partial Synopsis of the Fishes of the Fresh Waters of North Carolina. By Ed- 
ward D. Cope, A.M. Amer. Phil. Soc., Phila., 1870, p. 466; foot note. 
