248 CONTRIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY — Ir. 



is slightly decarved when present on the anterior half of the bod^-. 

 The eandal fin is long and very deeply furcate. It is contained 3^4 

 times in head and body, and the median rays are about two-fifths the 

 length of the longest. The dorsal is high, its longest ray reaching nearly 

 or quite half the disttince from front of dorsal to tail. The front of the fin 

 is a little nearer nose than caudal. The pectorals extend about three- 

 fourths the distance to the veutrals, and the latter nearly or quite attain 

 the vent. D. I, 7 or 8 ; A. I, 7 or 8; scales 5, 38-40, 4, with 15 or 16 rows 

 before dorsal. The pharyngeal bones are thin, and suddenly and 

 broadly dilated at outer third, this part of the bone being nearly 3 times 

 as wide as the inner, and in shap(^not unlike a horse's jaw-bone. The 

 odontoid process is unusually distinct and high. The teeth are very 

 slender, strongly hooked, and sharply and irregularly crenate, the edges 

 lui ving a spinose appearance. The scales are crowded, higher than long, 

 and wanting on the anterior half or two-thirds of the breast. Color in 

 alcoliol yellowish brown, with a faint silvery lustre on sides. A narrow, 

 blaclc band, about one scale wide, extends around the nose, through the 

 upper half of the eye, to the tail, terminating therein the most highly col- 

 ored specimens in a narrow vertical bar. The scales above the lateral 

 band are all dark-edged. In all the specimens the dorsal shows a large 

 snl>median blotch in Iront, crossing about 4 rays. In one this blotch is 

 so enlarged as to include the whole anterior half of the fin, except a 

 small space at base, and a second blotch extends similarly across the 3 

 posterior rays, leaving only a narrow pale vertical stripe between. 

 Length of largest specimen 2^ inches. Several specimens from the 

 Illinois Eiver at Pekin and Peoria, and from Mackinaw Greek." {Forbes.) 



107.— JVOTEMIGOIVUS Kaliuesqiie. 

 Golden Shiners. 



{Slilbe DeKay.) 



(R:Uin('S(iUt', Joiiru. do Physique, do Cliymic ct cT'Histoire Naturelle, Pari^, 1819, 421 : 

 type Xofemifjonus auraiiif: Raf. =: Cypriims chriisolcncus Mitch.) 



Body subelliptical, strongly compressed, both back and belly curved, 

 the curves different; back narrowly compressed ; belly behind ventral 

 fins forming a keel, over which the scales do not pass. Tail not keeled. 

 Head small, conic. Mouth small, terminal, oblique, normal, without 

 barbels. Scales rather large. Lateral line continuous, strongly de- 

 curved. Dorsal fin inserted behind the ventrals. Anal fin with its 

 base somewhat elongate, of from i> to 18 rays. Teeth 5-5, hooked, with 



