31. CYPRINID.E CERATICHTHYS. 213 



tebral band : a brown lateral shade. Head 3f ; depth 4^. D. 8 ; A. 7; 

 scales (J-40-3; teeth 4-4. L. 3i inches. One specimen known, from 

 Couestoga River, Pennsylvania. Perhaps a variation of the preceding. 

 {Cope.) 



(Cope, Proc. Acad. Nat. Sci. Phila. 1664. ■>77 ; Giinther, vii, 179.) 

 iiiiS. C. syillinetricilS (Baird <V Girard) J. 6c G. 



Body elongate, slender, moderately compressed, not elevated. Head 

 short, rather slender and pointed. Mouth small, little oblique, the lower 

 jaw included. Eye large, anterior, longer than snout, 3 in head. Bar- 

 bel small, but evident. Scales small, rather loosely imbricated. Lat- 

 eral line strongly decurved. Dorsal slightly behind ventrals. Coloration 

 pale ; scales dotted with black ; cheeks silvery. Head 4| ; depth 6. D. 

 8 ; A*. 8 ; scales 9-58-4 ; teeth 4-4, without grinding surface. L. Clinches. 

 Kivers of California. 



{Pogoidclithifn symmetrkus B. Sl G. Proc. Acad. Nat. 8(i. Phila. 18.'>4, 136 : Leucosomua 

 symmetricus Giinther, vii, '2(57.) 



** Species of small size, with the mouth subinferior and horizontal ; the dorsal fin in- 

 serted slightly in front of the ventrals, and the scales generally large and 

 silvery. (Ryhopsis Agassi/.*) 

 /'. Teeth two-rowed. 



329. C cniniugi Giinther. 



I^arbels minute. E^^e entirely in thp anterior half of the length of the 

 head, and nearly as long as the snout, which is obtuse, rounded, convex, 

 the mouth being subinferior. Interorbital space convex, as wide as the 

 orbit. Suborbital ring extremely narrow. Origin of dorsal fin a little 

 behind ventrals, somewhat nearer root of caudal than end of snout. 

 Pectorals not reaching ventrals. A grayish silvery band from gill- 

 opening to the r(H)t of caudal, where it terminates in a black spot. 

 Head 4i ; body 5. 1). 8 ; A. 8 ; scales 6-45-6 ; teeth one-rowed ? 

 L. 3^ inches. {Giinther.) "California"? 



((iiiiil her. vii. 177. ) 



3:iO. €'. luceiis .Jordan. 



Bcxly elongate, compressed, the back somewhat elevated from th(^ oc- 

 ciput to the base of dorsal, thence rapidly declined to the long and 

 slender caudal peduncle. Head short, compressed, the cheeks nearly- 

 vertical. Interorbital space rather broad and flat, somewhat grooved. 

 Eye very large, circnlar, liigh np, i)laced nearly midway of the length 

 of the head, its diameter about equal to the length of the snout and 



* Agassiz, Amer. .lonru. Sci. Arts, 18o4, 358 : type Hybopnis gracUisAg. (i^og, gibbous; 

 cxt/"-. face. ) 



