64 TELEOSTEI. — EVENTOGNATHI. — XII. 



e. Lower lobe of C. chiefly liluck; upper lobe pale; color pale, nn- 



^llotteli. 



l.T.S H. gelidus ((iiraril). Very slender; snout lonp;, thick, blunt, 

 overlian;iiii<^ the rather larj^e muuth ; barbel us lon'^ as eye ; eye 

 4^ in head; (ins all high; 1'. as long as head; C. deeply forked. 

 Head 4; doi)th 5^. A. 7. Lat. 1. 44. L. 2. ilissouri Kiver, al)iin- 

 (lant in the river channels but not ascending brooks ; a singular 

 little fish. (Lat., frigid.) 



ee. Lower lobe of C. pale, like the upper; body dusted with dark 

 specks. 



13n. H. hyostomus ((Jilbert). Body and head very slender; 

 snout long, acute, projecting beyond mouth for half its length; 

 mouth short, wide, inferior; eye 3 J in head; barbel long; P. large, 

 other fins small; 13 scales before D. Head 4; depth 5J. A. 8. 

 Lat. 1. 37. L. 2^. Silvery, dusted with dark specks. Ind. to 

 Iowa. (Similar s{)ecies are //. asticalis (iirard. Ark. to Mexico, 

 still more slender, with longer snout and much smaller eye, 4 in 

 head, and //. hilranetnus Gilbert, Kansas, nearly like //. (csdrulis, 

 but with two barbels on each side.) (vr, hog; a-TOfia, mouth.) 



dd. Dorsal fin with a large black blotch on its last rays; scales small. 



140. H. monachuB (Cope). Body slender; head long and 

 slender; eye A\ in head; 24 scales before D. Olivaceous, sides 

 silvery; a black sjiot at base of C. ; no lateral band; scales not 

 speckled. Head 4; depth 5^. A. 8. Scales 8-5G-4. L.4. Tenn. K. 

 (Lat., solitary.) 



bb. Ej'es very large, 2^ to .3 in head; barbels conspicuous; D. inserted more 

 or less before V.; body not conspicuously speckled. 

 f. Teeth 4-4; sides with dark blotches. 



141. H. dissimilis (Kirtland). Body very long and slender; 

 head long, the snout blunt at tip, projecting beyond the small 

 mouth ; eye 2| in head ; P. long; 22 scales before I). Olivaceous, 

 with duskv lateral l)and, along which are several large round ilusky 

 spots, the most distinct at base of C. Head 4^; depth :>\. I). 8. 

 A. 7. Scales G-4 7-5. L. 5. Lake P>ie to Ky. and Iowa. (Lat., 

 unlike.) 



ff. Teeth, 1, 4-4, 1 or 0. 



g. Sides with a dark lateral band overlaid by silvery. 



142. H. amblops (Rafinesque). Bo«ly slender, the head large, 

 flatfish above ; eye longer than snout, 3 in head ; mouth small ; 

 snout bluntly decurved ; Ki scales before I). Greenish; sides with 

 a blackish or plinnheous band extending around snout, overlaid by 

 silvery. Head 4 ; depth .5. Scales 5-3H-4. L. 4. Ohio Valley to 

 Ala., common. Smaller than the ne.\t, and somewhat different in 

 color. (d/i/3Xiif, blunt ; iiy\f, face.) 



