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. A'nal 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 i^ scales at base of caudal fin. Belly opaque white. 

 Opercle and iris pure silvery. Length 3 J4 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 waiter 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. 



Alhnrnellits amoeniis Abbott, Am. Nat., VIII, 1874, p. 334. 



Alhurnus amoenns Abbott, 1. c, fig. 78. 



Minnilus ainocnus Abbott, Nat. Rambles, 1885, p. 479. 



Genus Rhinichthys Agassiz. 



The Black Nosed Dace. 



Key to the species. 



a. Snout long, prominent, projecting notably be3'ond mouth, about twice 



length of eye in adult ; barbel evident. cataract--^; 



aa. Snout shorter, projecting little beyond small mouth, its length 1^/2 times 



in eye in adult ; barbel minute, obsolete. atronasus 



