218 FISHES. 



7i. Vomer roughish, but without teeth ; head very short and 

 rounded; muzzle blunt; cheeks swollen; soft dorsal 

 larger than anal ; dorsal spines 10 to 14 ; sides with 

 green blotches or markings. . DIPLESIUM, 10. 



lili. Vomer with teeth ; head long, pointed ; the muzzle 

 conic, truncate at tip, projecting like a hog's snout; 

 dorsal spines about 13 ; sides with dark bars, alternately 

 long and short ; a small black spot at base of caudal. 



PERCINA, 11. 



/. MICROPERCA, Putnam. LEAST DARTERS. 

 1. M. punctulata, Putnam. LEAST DARTER. Greenish 

 olive, sides with irregular dark bars and zigzag markings; 

 dusky lines along the rows of scales; a dark shoulder 

 blotch; a black streak forward from eye and a vertical 

 bar below it; D. VI to VII 9 to 12; A. II, 5 or 6; 

 length 1^ inches. Western and Southern States. 



2. CATONOTUS, Agassiz. LINED DARTERS. 



1. C. flabellatus, (Raf.) Putnam. FAN-TAILED DART- 

 ER. Olivaceous, dusky above ; sides with obscure dusky- 

 bars; each scale with a brownish spot, these sometimes 

 forming series of longitudinal lines but never very 

 distinct ones; head narrow; mouth oblique; body rather 

 slender; D. VIII 12; A. II, 8; length 2| inches. 

 Great Lakes and streams from N. Y., S. and W., abund- 

 ant. (E. linsleyi) H. R. Storer. Oligocephalus humer- 

 alis and Catonotus fasciatus^ Girard.) 



2. C. lineolatus, Agassiz. STRIPED DARTER. Oliva- 

 ceous, each scale with a black spot, hence the body with 

 a series of fine dotted longitudinal lines which are very 

 distinct above; some (??) further marked with dark cross 

 bars; D. VIII 12; A. II, 8. Great Lakes and Missis- 

 sippi Valley, rather northward; body deeper and colors 

 much brighter than in the preceding, of which it is 

 probably a variety. 



