31. CYPR1NIDJ3 MINNILUS. 193 



Sns plain. Head 4J ; depth 4*. D. 8; A. 8; scales 5-401-3. L. 3 

 inches. Arkansas River. (Girard.) 



AUiurnopx xluimarfli and ilhwbr<i*n* Girarcl, Proc. Aoal. Nat. Sci. Pliila. 18. r >6, 194, 

 mil U. S. Pac. R. R. Surv. x, 261, 262. ) 



2?5. M. blcnuius (Grd.) J. & G. 



Body moderately elongate. Head moderate, the snout short and 

 strongly convex, so that the mouth is nearly horizontal, the upper lip 

 being below the level of the eye, lower jaw shorter than upper, max- 

 illary extending beyond front of eye. Dorsal directly over veutrals, 

 nearer snout than caudal. Scales deeper than long. Lateral line de- 

 curved. Head 4; depth 4. D. 8 ; A. 7 ; scales 6-40 '?-3. L. 3 inches. 

 Arkansas Kiver. (Girard.) 



(Albuniops Itlennins Grd. Pro.'. Ar;id. Nat. Sci. Phila. 185i, 194, and U. S. Pac. R. R. 

 +Surv. x, 261. ) 



tt Teeth without evident grinding surface. 



a. Teeth with the edges serrate ; scales closely imbricated. 



276. ftl. cercostigma (Cope) J. & G. 



" Teeth 2, 4-4, 2, with sharp, serrate edges (without grinding surface). 

 Dorsal fin inserted 2 scales behind that above insertion of the ventrals. 

 Dorsal line compressed, elevated, rising regularly from end of muzzle. 

 Cranium convex above. Mn/zle narrowed in proportion, slightly over- 

 hanging mouth. Eye 4 in length of head, l.V in length of muzzle, and 

 2 in interorbital width. Bud of maxillary opposite posterior margin of 

 nares. Ventral outline less curved than dorsal. Caudal peduncle 

 rather stout. Isthmus narrow. Scales rather elevated, 8-39-3. Lat- 

 eral line gently decurved over ventrals. Head 4 in length to origin of 

 caudal, 1 scale less than depth at dorsal. The pectorals nearly reacli 

 Mie ventrals, and the latter attain the vent, Eadii : D. 8; A. 8; the 



% 



longest (anal) ray four-thirds its base and three-sevenths distance to 

 longest fulcrum at origin of caudal. Total length 4.1 inches. Color 

 bright olive above, without line or spot : below and sides, from fifth row 

 of scales above, golden silvery ; all the fins, except the pectorals, with 

 white pigment at their bases, without markings; a large, round black 

 spot at base of caudal. 7 ' Pearl River, Mississippi. (Cope.) The num- 

 ber of teeth in the inner row as above described renders it necessary 

 for us to refer this fish to the genus Minnilus. Its affinities, however, 

 are evidently with Cliola, and the recorded dentition may be abnormal. 



(Cyprimlla cercontig ma Cope, Pvoc. Ac.-ul. Nat Sci. Phila. 1867, 157.) 

 aa. Teeth not serrate ; scales lousdy imbricated, scarcely higher than long. 



b. Dorsal fin inserted directly over tho ventrals ; anal rays 7-9; eye very large ; 

 scales large. (" Episema"* Cope & Jordan.) 



* Name preoccupied. 

 Bull. Nat, Mus. No. 16 13 



