31. CYPrtINID.E — CLIOLA. 163 



equal to snout, 3J in head. Dorsal sligbtly beliind ventrals, nearer 

 snout tlian base of caudal. Lateral line with pores on 8 or 10 scales 

 only. Straw-color J a narrow dark dorsal hand, and a dark streak on 

 each side of anal. A plumbeous lateral band, and black si)ecks on each 

 scale. A black spot as large as the eye at base of caudal. Uead 4i ; 

 depth 5. B. 8 ; A. 8 J scales 5-38-3 ; teeth 4-4, with grinding surface. 

 L. 2i inches. Chickasawha Eiver, Mississippi. {Hay.) 

 (Hay, rroc. U. S. Nat. Mas. 1380, 505.) 



201. II. SiCtcs'odoii Cope. 



Body moderately stout, the back compressed and somewhat elevated. 

 Head rather pointed, the muzzle acuminate. Mouth oblique, the lower 

 jaw projecting, the u^^per lip opposite the upi^er rim of pupil. Maxillary 

 extending to opposite front of orbit. Thirteen scales in front of dorsal. 

 Eye 3 in head. Color olivaceous. A blackish dorsal band. Sides with 

 a leaden or dusky band. D. 8 ; A. 8. Scales 5-3G-3, the lateral line 

 extending about half the length of the body. Teeth 4-4, often crenate. 

 L. 2.J inches. Michigan and Wisconsin. 



(Alburnops hvterodon Cope, Proc. Acad. Nat. Sci. Pliila. 1S64, 281 : lliibopsis Jielcrodon 

 Cope, Cypr. Penn. 382: Leuciscus heterodon Giiutlier, vii, 261: Hemiiremia heterodon Jor- 

 ilan, Man. Vert. 303.) 



§1.— CE.IOI.A Girard. 



Silver Fins. 



{Codoma, Cuprinella, Moniana, and Hudsonius Girurd ; Fhotogenis aud Hyhopsis Co-pe; 

 Graodus Giiiither; Erogula Jordan.) 



(Girard, Proc. Acad. Nat. Sci. Pliila. 1850, 192 : type Ceraticlithys v'ujilax Bd. &, Grd.) 



Body ovate, oblong, or elongate, usually compressed. Mouth normal, 

 usually rather small. jSTo barbels. Scales various, commonly large, often 

 closely imbricated. Lateral line complete, usually decurved. Dorsal fin 

 generally more or less behind ventrals. xVnal short or rather elongate. 

 Teeth 4-4, or 1, 4-4, 0, or 1, 4-4, 1* (1, 4-4, 2 in one species), hooked, with 

 or without grinding surface, the edge often more or less serrate. Intes- 

 tinal canal short. Peritoneum mostly pale. JNIales in spring usually 

 prickly, with the fins charged with led or white liigment. A very large 

 group of snfall fishes, usually brilliantly colored ; abundant in all our 

 Southern and Eastern rivers, and extending southward to Western 

 IMexico.t All are American. (A coined name.) 



* Said to be 1, 3-3, 1 in one species, C. cobitis. If this be true, the latter species will 

 • form the type of a distinct f^fcnus, Tiaroria Girai'd, Proc. Acad. Nat. Sci. Phila. 1S5G, 

 204 : type Tiaroga cohitis Girard. (A coined name.) 



t(«.) C. alta Jordan. Body moderately elongate, compressed, deep, the back 

 somewhat elevated. Head short, somewhat depressed above, moderately pointed. 

 Eye moderate, shorter than snout, 5-6 in head. Mouth medium, oblique, terminal, 



