31. CYPRINIDiE CERATICHTHYS. 
213 
tebral baud ; a brown lateral shade. Head 3| ; depth 4^. I). 8 ; A. 7 ; 
scales C-40-O ; teeth 4-4. L. inches. One specimen known, from 
Conestoga Eiver, Pennsylvania. Perhaps a variation of the prece'ding. 
{Cope.) 
(Cope, Proc. Acad. Nat. Sci. Phila. 1664, 277 ; Guntlier, vii, 179. ) 
328. C. symmetric us (Baird & Girard) J. & G. 
Body elongate, slender, moderately compressed, not elevated. Head 
short, rather slender and pointed. Month 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| 5 depth 6 . D. 
8 ; A. 8 ; scales 9-58-4 ; teeth 4-4, without grinding surface. L. 6 inches. 
Kivers of California. 
{Pogonichthya symmetricus B. & G. Proc. Acad. Nat. Sci. Pliila. 18.54, 136: Leucosomus 
symmetricus GUnther, vii, 267.) 
Species of small size, with the mouth suhiuferior and horizontal; the dorsal fin in- 
serted slightly in front of the ventrals, and the scales generally large and 
silvery. (Hyhojms Agassiz.*) 
h. Teeth two-rowed. 
329. C. ctimiiig'i Gunther. 
Barbels minute. Eye entirely in the 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. 
IVctorals not reaching ventrals. A grayish silvery band from gill- 
opening to the root of caudal, where it terminates in a black spot. 
Head 4i ; body 5. D. 8 ; A. 8 ; scales 6-45-6 ; teeth ,one rowed ? 
L. 3 J- inches. {Gunther.) “California”? 
(Gunther, vii, 177.) 
330. C'. Iiicciis Jordan. 
Body elongate, compressed, the back somewhat elevated from the 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, circular, high uj), placed nearly midway of the length 
of the head, its diameter about equal to the length of the snout and 
* Agassiz, Amor. Jourii. .Sci. Arts, 1854, 358 : type IJyhopsis gracilis Ag. {vliog, gibbous; 
ott/'f, face.) 
