128 TELEOSTEI: ACANTHOPTERI. XX. 



Vert. 40. L. 4. Ind to Ark. and Texas. S. W. occurs var. ser- 

 rula J. & G., with preopercle more sharply serrate ; markings more 

 definite; lat. 1. 68 to 71 ; breast naked. Resembles E. aspro. 

 (criufpos, shaded.) 



ss. Palatine teeth obsolete ; dorsal spines 10 to 12 ; <f with the lower 

 fins tuberculate in spring. (Ericosma 1 Jordan.) 



343. E. evides (Jordan & Copeland). Body rather stout, com- 

 pressed ; head heavy, rather blunt forward ; eye large ; mouth 

 smallish, the maxillary reaching eye ; lower jaw included ; cheeks, 

 nape and breast naked ; ventral scales moderate ; fins large. Dark 

 olive, tessellated above ; back with 7 broad transverse bars which 

 extend below lateral line ; these bars are black in 9 > with yellowish 

 interspaces ; in deep blue-green, the interspaces yellow with 

 copper-red blotches ; throat, cheeks, upper fins, and two spots at 

 base C., largely orange ; A. and V. chiefly blue-black ; fins not 

 barred ; a black spot on last D. spines ; 9 with paler colors. Head 

 4J; depth 5. D. XI -11. A. 11,8. Scales 9-65-9. Vert. 40. 

 L. 3. Ind. to Iowa and Ark ; one of the most brilliant of the 

 darters, ((vfiftfa comely.) 



rr. Ventral line covered with ordinary scales, which are never shed in 



life. 



V. Lateral line complete 2 (with rare exceptions; see E. nianguce). 

 w. Anal fin large, 2 little if any smaller than the soft dorsal. 

 x. Gill membranes nearly 2 separate from each other. (Hadropte- 



rus 3 Agassiz.) 

 y. Scales very small, lat. 1. about 85. 



344. E. aurantiacum (Cope). Elongate ; snout longer than 

 eye ; lower jaw included ; cheeks and opercles scaly ; throat smooth. 

 Golden brown, a series of small round brown spots traversed by a 

 black lateral band which extends around snout ; yellow below ; fins 

 plain. Head 4^; depth 6. D. XV- 15. A. II, 11. L. 4f Upper 

 Tenn. R. (Lat., orange.) 



yy. Scales moderate, lat. 1. 55 to 75. 



345. E. cymatotaenia Gilbert & Meek. Body robust; head 

 short, the snout short and slender ; mouth small, oblique, included ; 

 maxillary nearly to front of eye ; eye large, 4 in head ; cheeks, 

 opercles, nape and breast with large scales ; preopercle entire ; gill 

 membranes narrowly joined, the degree of union variable, usually 

 very slight; 1st A. spine long and strong; P. short. Greenish, 

 with fine dark points ; two pale streaks along sides, below the lower 

 a broad dusky wavy band ; a small black spot at base C. ; fins trans- 



1 Tip, spring-time ; Ko<rju.e'w, to adorn. 



J These characters are none of them of high importance and are subject to some 

 variations. 



3 aSpos, strong ; irrep6v, fin. 



