318 Bulletin 47, United States National Museum. 



ventrals; fins moderate. Color plain brownish, without black dots, sides 

 and below silvery ; fins plain. Length 2i inches. Types supposed to be 

 from the upper Missouri. 



Hybupsis montamts, MEEK, Proc. U. S. Nat. Mus., 1884, 520, locality unknown, but collected 

 by Dr. F. V. Hayden. (Type, No. 36882.) 



526. HYBOPSIS CTJMINGII (Gunther.) 



Head4i; body 5. D. 8; A. 8; scales 6-45-6; teeth one-rowed? Barbels 

 minute. Eye entirely in the anterior half of the length of the head, and 

 nearly as long as the snout, which is obtuse, rounded, convex, the mouth 

 being subinferior. Interobital space convex, as wide as the orbit. Sub- 

 orbital ring extremely narrow. Origin of dorsal fin a little behind ven- 

 trals, somewhat nearer root of caudal than end of snout. Pectorals not 

 reaching ventrals. Olivaceous, a grayish silvery band from gill opening 

 to the root of caudal, where it terminates in a black spot. Length 3| 

 inches. California, (Gunther.) Not seen by us. (Named for H. Cnming.) 



Ceraiichthys cumingii, GtJNTHER, Cat., vn, 177, 1868, California, (Coll. H. Cuming); copied in 

 JOBDAN & GILBERT, Synopsis, 213, 1883. 



527. HYBOPSIS MONACUS (Cope). 



Head 4; depth 5J. D. 8; A. 8; scales 8-56-4; teeth 4-4. Body slender, 

 somewhat compressed, not much elevated. Head long and rather slender, 

 flattish above, with projecting muzzle; mouth inferior, horizontal, small, 

 the maxillary not reaching the eye, which is quite small, 4^ in head. 

 Scales rather small ; 24 scales in front of dorsal. Fins moderate. Color 

 light olive; a metallic vertebral band ; sides and belly silvery ; no lateral 

 band; a conspicuous black spot at base of caudal ; muzzle dusky; mem- 

 brane of upper posterior part of dorsal fin black as in Notropis whipplii 

 and related species. Length 4 inches. Tennessee Basin, in the river 

 channels; rather scarce, (monachus, ^ova%og, solitary.) 



Ceratichthys monacus, COPE, Jouru. Ac. Nat. Sci. Phila., 1867, 227, Holston River, Washing- 

 ton County, Virginia. (Coll. Cope.) 

 CeraticlUhys monachus, JORDAN & GILBERT, Synopsis, 217, 1883. 



528. HTBOPSIS DISSIMILIS (Kirtland). 



(SPOTTED SHINER.) 



Head 4| ; depth 5. D. 8 ; A. 7 ; scales 6-40 to 47-5 ; teeth 4-4, often with 

 slight grinding surface. Body long and slender, little compressed, with 

 long caudal peduncle. Head long, rather flat above, the snout somewhat 

 bluntly decurved, projecting a little beyond the rather small, horizontal 

 mouth; lower jaw included; both jaws with the skin hard in front, form- 

 ing a sort of lip laterally. Barbel considerably shorter than pupil; max- 

 illary not reaching nearly to orbit. Eye very large, high up, somewhat 

 directed upward, rather behind middle of head, forming more than one- 

 third length of head. Opercle small. Dorsal rather large, its posterior 

 border oblique; anal small; caudal well forked; pectoral rather long. 

 Scales rather large, 16 to 18 in front of dorsal. Lateral line nearly straight. 

 Olivaceous ; back irregularly mottled; sides silvery, with a bluish lateral 



