FISHES 133 



fins XII to XIV-ii to 13; anal II, 7 to 9; scales 8-51 to 63-12: Ohio 

 basin; rare. 



E. swannanoa Jordan & Evermann. Body robust; length 75 mm.; 

 head 4.3; depth 6; head naked, very short and blunt; color green, with 

 6 distinct dark cross blotches on the back and 8 or 10 on the sides; 

 cheeks, opercles and breast naked; rays of dorsal fins XI or XII- 12 to 

 14; anal II, 9; scales 6-48 to 57-7 or 8: upper waters of the Tennessee 

 River; common. 



E. thalassinum (Jordan & Bray ton). Length 60 mm.; head 3.6; 

 depth 4.75 to 5; color dark green, blotches above and with 6 to 9 dark 

 vertical bars; dorsal fins reddish; females duller; head and throat naked; 

 rays of dorsal fins IX to XI-io to 12; anal II, 7 or 8; scales 5-40 to 48-7 : 

 Santee River basin; very abundant. 



E. zonale (Cope) (Fig. 61). Body slender; length 75 mm.; head 4 or 

 5; depth 5 or 6; color olivaceous, with large dorsal spots which connect 



Fig. 61. — Elheostoma zonale {from Fishes of Illinois). 



with a lateral band from which 8 bands encircle the belly; rays of dorsal 

 fins X or XI-IO to 12; anal II, 6 to 8; scales 6-48 to 53-9; cheeks, 

 opercles and throat more or less scaly : Mississippi Valley, from Ohio to 

 Iowa; southward to Alabama and Louisiana; abundant; very variable. 



E. camurum (Cope). Blue-breasted darter. Body stout; length 

 60 mm.; head 4; depth 4.5; color dark olive, sprinkled with crimson 

 dots; throat and breast deep blue; posterior dorsal, anal and caudal fins 

 crimson, bordered by yellow and blue; rays of dorsal fins XI-13; anal 

 II, 8; scales 7-50 to 58-8; cheeks and opercles naked; body stout; head 

 blunt: Indiana and Ohio to Tennessee, in swift waters; not common. 



E. maculatum Kirt. Body elongate with a large tail fin; length 60 

 mm.; head 4; depth 5.25; color black above, olive below; throat blue; 

 back and sides with crimson dots; anterior dorsal fin with a black spot; 

 tail fin with 2 crimson spots at the base; cheeks naked; opercles scaly; 

 rays of dorsal fins XII-12 or 13; anal II, 8 or 9; scales 9-56 to 63-14: 

 northern Ohio and Indiana to northern Alabama and Tennessee: rare. 



