THE FISHES OF NEW JERSEY. 149 
surface, and single tooth similar to others but only half size. 
Occasionally teeth 3, 4-4, 2. Lateral line decurved from upper 
angle of opercle, continues slightly oblique till some distance be- 
yond dorsal, but not rising again opposite that fin and continuing 
to caudal. Insertion of dorsal slightly behind that of ventral, and 
last ray slightly in advance of anal. Anal broad, its base equal 
to anterior ray, and edge slightly concave. Caudal forked or 
emarginate. Pectoral terminates at a distance of 3 scales width 
from ventral. Ventral reaches opposite fifth dorsal ray. Color 
pale olive above with minute black dots on exposed edges of 
scales. A bright silvery band, 3 scales wide at opercle, and nar- 
rowing to 1%4 scales at base of caudal fin. Belly opaque white. 
Opercle and iris pure silvery. Length 3% inches. In the summit 
level of the Delaware and Raritan Canal, which has an unob- 
structed outlet into the Raritan River, 25 miles east of the Dela- 
ware. ( Abbott. ) 
_ This fish I have never taken in the Delaware or New Jersey, 
but contrary to Dr. Abbott’s statement of 1874, I have since found 
within the Susquehanna basin. According to that writer it is 
rare. It may be distinguished from our other species of Notropis 
by the teeth and the increased anal rays. The type was sent to 
the Peabody Academy. 
Alburnellus amenus Abbott, Am. Nat., VIII, 1874, p. 334. 
Alburnus amenus Abbott, 1. ¢., fig. 78. 
Minnilus amenus Abbott, Nat. Rambles, 1885, p. 479. 
Genus RHINICHTHYS Agassiz. 
The Black Nosed Dace. 
Key to the species. 
«. Snout long, prominent, projecting notably beyond mouth, about twice 
length of eye in adult; barbel evident. CATARACT A 
aa. Snout shorter, projecting little beyond small mouth, its length 114 times 
in eye in adult; barbel minute, obsolete. ATRONASUS 
