676 



ZOOLOGY FIHSES. 



beyond the upper lip. Upper lip moderately wide, pendent, furnished with 

 three rows of small tubercles. Posterior lip full, with a strong median 

 emargination, and entering angle at junction with anterior lip ; tubercles 

 numerous, small. Orifice of mouth large, slightly curved ; tomia with 

 smooth borders. As the specimen is adult, the eye is relatively small, enter- 

 ing the length of the head seven times and the interorbital width 3.5 times. 

 The length of the head enters the total (with caudal fin) six times. 



The scales are much larger on the caudal peduncle than on the anterior 



18 



parts of the body, and number n. Fin radii : D. I. 10 ; A. 7; V. 9 ; pecto- 



16 



rals not reaching half way to ventrals ; the latter 0.75 the distance to the 

 anal fin. Emargination of caudal fin distinct, shallow. Dorsal a little 

 nearer basis of caudal than end of muzzle. Eleven longitudinal rows of 

 scales on caudal peduncle. 



Color in spirits olivaceous ; decidedly green on the head ; lower sur- 

 faces and fins (narrowly on belly) yellow. Total length, O m .365 ; length 

 to dorsal fin, CT.150 ; length to caudal fin, B .307. 



One species accompanying an Anmtrus, which is marked Arkansas 

 River, at Pueblo, Mr. C. E. Aiken. 



CATOSTOMUS, Les. 

 CATOSTOMUS 1NSIGNE, Bd. & Gir. 



Catostomus insigne, BD. & Gm., Proc. Acad. Nat. Sci. Phila., 1854, 28. 

 Minomus insignis, Gm., U. S. & Mex. Bouud. Surv., ii, Ichthyology, 37, 37, pi. xxi, 

 figs. 1-4. 



This species is a true Catostomus, and the fine adult specimens all exhibit 



11 

 the characteristic fronto-parietal fontanelle. Scales, j| ; radii, D. I. 1 1 ; A. 



9 



7 ; V. 9. 



