THE CYPRINOIDS OF CENTRAL NEW JERSEY. 331 
other cyprinoids, but larger ones even killed and devoured adult 
specimens of Hybopsis bifrenatus. 
8. Clinostomus funduloides Girard. We have, during the past 
summer, met with single specimens of this last mentioned cy- 
prinoid, associated with other small fishes, on several occasions. 
They are identical with specimens in the Museum of the Academy 
of Sciences, at Philadelphia; marked by Prof. Cope, from tribu- 
taries of the Susquehanna River, Penn. 
-9. Hybopsis bifrenatus Cope. ‘Minnow.’ This little fish, 
characterized by an imperfect lateral line, and deep straw color 
and black markings, is probably our most abundant species of this 
genus. 
10. Hybopsis chalybeus Cope. ‘‘ Minnow.” This species, which 
much resembles the preceding, has a complete lateral line. It is 
not uncommon, and usually met with, associated with the other 
small Hybopses. 
11. Hybopsis procne Cope. “Minnow.” To quote Prof. Cope, 
“This small species may be readily distinguished among others 
common in our streams, by its long caudal peduncle and tail, its 
large brown-edged dorsal scales and plumbeous lateral band.” 
The first mentioned of these three species of Hybopsis is every-- 
where, in New Jersey, exceedingly abundant, and supplies the 
carnivorous fishes with an unfailing supply of food. In a collec- 
tion of Hybopses before us, we find the three species represented 
in the following proportion, and believe this to be about their rela- 
tive abundance in the Delaware and tributaries, at this point. 
Whole number of specimens, 123. 
Of H. bifrenatus, . $ è 3 š 75 specimens. 
"S chalabeus, . ‘ : š 22 vie 
zoe procne, ‘ : i ` . 26 = 
In identifying the above series of small minnows, we have been 
guided solely by Cope’s synopsis, to which we have so frequently 
referred. While we believe we are correct in our identifications 
_of the three species, we must here mention that there were some 
individuals of this series (and it holds good of every collection 
we have made, of small Hybopses) which we found it difficult to 
determine, as to their specific relations, that were in fact neither 
_ bifrenatus nor chalybeus, and, as we believe, not the young of 
other fishes.: In a series of a thousand individuals, one will be 
