;6 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. V. 



Head 4; depth 4^; D- 8; A. 10; scales 6-37-3. Body elongate, 

 rather slender ; snout pointed, short; 4 in head; mouth large, terminal, 

 oblique; jaws about equal; end of maxillary reaching to middle of 

 the pupil; margin of upper lip on level with center of eye; eye large, 



. FIG. 22. NOTOTROPIS SANTAROSALI/C Meek. 



No. 3535, Field Columbian Museum. 



3 in head; origin of dorsal fin midway between base of caudal and 

 anterior margin of the orbit; 18 scales in a series before- dorsal fin; 

 base of dorsal fin 2^ in head, its longest ray iX m head; pectorals 

 iX m head; ventrals if; lateral line decurved, complete; the lateral 

 line about one scale-width below the lateral band. 



Color light olivaceous, with a broad dark lateral band from snout 

 through eye to base of caudal, rnore prominent on the posterior 

 half of the body, not ending in a black caudal spot; fins all plain. 

 Length about 2 inches. 



28. Pheiiacobius Cope. 



Phenacobius Cope, Proc. Acad. Nat. Sci. Phila., 1867, 96. (Type, 



Phenacobius teretulus Cope.) 

 Sarcidium Cope, Hayden's Geol. Sur. Wyom., 1870 (1871), 440. 



(Type, Sarcidium scopiferum Cope.) 



Body elongate, little compressed; head moderate, subterete; 

 mouth inferior, the lower lip thin mesially, but enlarged into a 

 fleshy lobe on each side toward the angle of the mouth, resembling 

 a cut lip ; upper lip with a callous covering within ; dentary bones 

 distinct, except at the symphysis; no barbel; upper jaw protractile; 

 teeth 4-4, without grinding surface; scales small; lateral line present; 

 isthmus wide; alimentary canal short; peritoneum white. 



70. Phenacobius scopifer (Cope). 



Sarcidium scopiferum Cope, Hayden's Geol. Surv. Wyo., 1870 

 (1871), 440; Missouri River near St. Joseph, Missouri. 



