31. CYPRINIDJE CLIOLA. 1G3 



equal to snout, 3 in head. Dorsal slightly behind ventrals, nearer 

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

 only. Straw-color 5 a narrow dark dorsal baud, and a dark streak on 

 each side of anal. A plumbeous lateral band, and black specks on each 

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

 depth 5. D. 8 5 A. 8 5 scales 5-38-3 ; teeth 4-4 7 with grinding surface. 

 L. 2 inches. Chickasawha River, Mississippi. (Hay.} 

 (Hay, Proc. U. S. Nat. Mus. 1880, 505.) 



2O1. II. Iaetea*o<9on Cope. 



Body moderately stout, the back compressed and somewhat elevated. 

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

 jaw projecting, the upper lip opposite the upper 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 5 A. 8. Scales 5-36-3, the lateral line 

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

 L. 2J inches. Michigan and Wisconsin. 



(Albitrnops hcterodon Cope, Proc. Acad. Nat. Sci. Phila. 1864, 281 : Hybopsis Uetcrodon 

 Cope, Cypr. Peiin. 382 : Leuciscus heterodon Giiuther, vii, 261 : HemUremia heterodon Jor- 

 dan, Man. Vert. 303.) 



84. CLIO&A Girard. 

 Silver Fins. 



(Codoma, Cyprinella, Montana, and Hudsonius Girard ; Pliotogcnis arid Hybopsis Cope; 



Graodus Giiuther; Erogala Jordan.) 



(Girard, Proc. Acad. Nat. Sci. Phila. 1856, 192: type Ceratichthys vigilax Bd. &Grd.) 



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

 usually rather small. No barbels. Scales various, commonly large, often 

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

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

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

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

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

 prickly, with the fins charged with red or white pigment. A very large 

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

 Southern and Eastern rivers, and extending southward to Western 

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



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

 form the type of a distinct genus, Tiaroga Girard, Proc. Acad. Nat. Sci. Phila. 1856, 

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



t(.) C. alia 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, 



