Cope.] 4:04: [June T, 



nearly to the end of the fin in one specimen .75 the distance in another. 

 Color, brownish golden. Length, one foot. 



75. Carpiodes cypkinus, Lesueur. 



Catostomus do., Lesuenr, Journ. Ac. Nat. Sci. Phil. I, 91, Tab. Car- 

 anodes, Agassiz, 1. c. Giinther, Cat. Brit. Mus. VII, 24. Carpiodes vacca, 

 Agass., 1. c. 



This is another elongate species with shorter dorsal radii, and rather 

 large scales. In six small specimens there are 7 rows above the lateral 

 hne, and in two young and one adult, six. Length of head 3 j times in 

 length same and body; eye small, .25 times in interorbital width, nearly 

 six times in head in adult of a foot in length, 4.5 times in young of five 

 inches. Muzzle quite prominent, but obtuse. Front scarcely concave 

 between orbits or in front of nasals, (thus differing from most cf the other 

 species). End of mandible extending beyond line of nares. Lips faintly 

 plicate. Supraoccipital region elevated, little ridged. Anterior dorsal 

 rays midway between origin of caudal and end of muzzle. Color silvery, 

 dorsal fin black, paired fins white-margined. 



Common in the tributaries of the Chesapeake and Potomac, rare in 

 those of the Delaware in Pennsylvania. 



C. damalis. Gird., from the Platte R., is very near this species. 



Carpiodes nummifer, Cope. 



Species nova. 

 ' The largest species of the genus, from the "Wabash River, Indiana. 



The detailed characters have been given in the synopsis of the species. 

 The form is characterized by elongation, and the small proportions of the 

 head. The body is compressed, and the dorsal line elevated to the first 

 dorsal ray, which is considertibly nearer the end of the muzzle than the 

 ori<Tin of the caudal fin. Its rays are more numerous and the anterior 

 shorter than in any other species here enumerated. The bony and first 

 cartilaginous rays are stouter than in any other species, the latter presents 

 no segmentation on the surface for the basal half. 



The orbits are more anterior than in other low-finned Carpiodes, the 

 middle line of the cranium falling .25 inch behind the orbit in a specimen 

 of 20 inches length. Diameter 4.6 in head, nearly twice in interorbital 

 width. Scales 7—36—5. Muzzle short, rather obtuse but projecting 

 much beyond mouth. Symphysis mandibuli extending to nares. 



Color of scales an olive silver or nickel color, whence the name nummi- 

 fer, money-bearer. Sides of head yellow. Length 18 and twenty-four 

 inches at least. Wabash River, Indiana; three specimens. ' 



NOTURUS, Rafinesque. 

 76. NoTUKTJS MARGiKATUS, Baird. 

 From the Catawba and Yadkin rivers. 



