128 TKLEOSTEI : ACANTIIOPTERI. — XX. 



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

 ruln .1. & fl., will) |)rt'()]K'rcU* iiion- sharply serrati- ; inarkiiiiis iiuire 

 (lellnitc; hit. h G>1 to 71 ; breast naked. Resembles E. aspro. 

 {(TKitpK, shaded.) 



ss. I'lilatine teeth obsolete ; dorsal spines 10 to 12; cT with the lower 

 litis tuberculate in spring. (Ericosmai Jordan.) 



34.3. E. evides (Jordan & C()])eland). Body rather stout, com- 

 pressed ; head heavy, rather l)liint forward; eye lar<;;e ; mouth 

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

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

 ohve, 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, up})cr fins, and two spots at 

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

 barred; a black spot on last D. sj)ines; 9 ^^'^li paler colors. Head 

 4^, depth 5^. D. XI-11. A. II, 8. Scales 9-G5-9. Vert. 40. 

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

 darters. (fJetS^r, comely.) 



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



life. 

 V. Lateral lino complete' (with rare exceptions; see E. nvingun). 

 w. Anal tin Ijirj^i',^ littk- if any smaller than tiie soft dorsal. 

 X. Gill membranes nearly - sejiarate from each other. (Uadroptd- 

 rus 3 Aeassiz.) 

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



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

 eye ; lower jaw iucludeil ; checks and oj)ercles scaly ; throat smooth. 

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

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

 plain. Head 4^; depth (;. D. XV-15. A. II, 11. L. 4^. Ujipcr 

 Tenn. R. (Lat., orange.) 



;/!/. Scales moderate, lat. 1. 55 to 75. 

 34."). E. cymatotaenia Gill)ert & Meek. Body robust ; head 

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

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

 operdes, nape and l)rcast with large scales; prcojx-rcle entire; gill 

 memljranes narrowly joined, the degree of union varialjic, usually 

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

 with fine dark points; two pale streaks along sides, In-low the lower 

 a broad dusky wavy band : a small black spot at liase C ; fins trans- 



• i)p, sjiringtitiu' : Kotrniut, to .miom. 



* Tlii-se chnructers arc iioiio of tlium of high iinportaucc aiiJ are sutijcct to some 

 variations. 



> a<Sp6f, .itruiij^ ; iTTcpur, lln. 



