1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 6 



eudiiig in a dark spot. In a few this band is qnite distinct, but in most, 

 especially the larij;ei' examples, it is very obscure and overlaid by sil- 

 very. Fins pale, the caudal somewhat dusky, with a little pale at base. 

 None of these specimens show the very distinct dusky lateral baud 

 and the bright crinison flush of the sides and lower parts shown in 

 specimens taken a few days earlier by Gilbert & Meek in ]S'iany,ua, 

 Eiver, Missouri. In these the red shades were very brilliant. All the 

 specimens, red and ])ale, however, evidently belong to the same species 

 and correspond well to Agassiz's scanty descrii)tion of Albunius zona- 

 tns* Allied to X. coccofieni.s Cope, but with much smaller mouth. 



Body comparatively elongate, moderately com])re.ssed. Head rather 

 long, not very acute, rather broad and tiattish al)ove. Snout shortish, 

 3;'5 in head. E;^e very large (subject to consideiable Aariation in ditfer- 

 ent specimens), about 3 in head. 



Mouth oblique, the jaws equal, the maxillary not quite reaching front 

 of eye, its length 3 in head. 



Scales not especially crowded, little deeper than long anywhere, their 

 edges indistinct along the flanks, not being marked by any special dusky 

 shade. Pores of the lateral line without dark dots. Lateral line com- 

 plete, considerably decurved. Scales before dorsal large, about IG in 

 number. 



Insertion of dorsal behind that of ventrals, at a point midway be 

 tweeu tip of snout and base of caudal tin. Vertical fins moderately 

 high. Pectoral tins reaching nearly to ventrals, the latter not quite to 

 vent. 



Head, 4^ in length ; depth, U to 4!^. D. 8; A. 8 or 9. Scales, G-39-I. 

 Teeth, 2, 1-4, 2, hooked, with slight grinding surface. Length, 4 to 5 

 inches. 



This species is found in the river channels with N. (/({Idctuyus, and is 

 equally abundant. 

 11. Notropis scabriceps Copo. 



Our specimens agree well with Cope's description (Proc. Ac. Nat. Sci. 

 Phila., 1807, lOG), and also with the description given in our Synopsis. 



Head, 3| in length ; depth, 4|. D. 8; A. 8 or 9. Scales about 0-30-3. 

 Teeth, 2, 4-4, 2, with traces of grinding surface. Length of longest speci- 

 men, 2f inches. 



Body comparatively' robust, not strongly compressed, the back some- 

 what elevated. Head large, broad, and flattish above, the interorbital 

 width about equal to length of eye. Snout short, 3J> in head. Eye large, 

 about 3. Mouth rather large, oblique, the jaws equal, the maxillary 

 extending to o])posite front of eye, 3 in head. 



* "Brown npou tlio liack ; a silvery baud from the iioso across the eye to the caudal 

 fni ; beueath this a slightly broader dark baud, which extends from the snout to the 

 tip of the ceutral rays of the caudal fin ; silvery below the dark band. Head largo and 

 rouuded. Avcragelengthof specimens 3 inches. Osagellivcr. !Mr. Stolley." (Agassiij 

 MSS., Tutuam Bull. M. C. Z., 1883, 1, 9.) 



