FISHES 119 



-4. roanoka (Jordan & Jenkins). Length 60 mm.; head 4; depth 

 4.75; color light yellow, with dark green markings and 10 or 11 vertical 

 green lateral confluent bars; anterior dorsal fin with a median band of 

 bright yellow; female pale; rays of dorsal fins X or XI- 1 1 ; anal II, 8 or 9; 

 scales 5-48-9; body robust: southern Virginia and North Carolina; 

 common. 



3. Ericosoma Jordan. Similar to Alvordius, but without palatine 

 teeth; ventrals not widely separate; males with lower fins tuberculate 

 in the spring: i species. 



E. evides (Jordan & Copcland). Length 75 mm.; head 4.3; depth 

 5.3; color extremely brilliant, olivaceous or yellow above, mottled with 

 darker with about 7 broad transverse green (male) or black (female) 

 bars extending from the back down the sides, connected by an orange- 

 brown lateral line; rays of dorsal fins XI- 10; anal II, 8 or 9; scales 9-52 

 to 67-9 to 11; cheeks not scaly: Indiana, in the Maumee and Wabash 

 basins, to central Iowa; southward to Arkansas and North Carolina; 

 often common. 



4. Serraria Gilbert. Similar to Alvordius, but with serrate 

 preopercle: i species. 



5. sclera (Swain). Length 75 mm. ; head 4 to 4.8; depth 5 or 6; color 

 yellowish olive, everywhere vaguely blotched with black; top of head, 

 dorsal anal and caudal fins black; preopercle serrate; cheeks and opercles 

 scaly; gill membranes united; rays of dorsal fins XIII- 13 or 14; anal 

 II, 9; scales 7-65 to 70-17; fins very large: northern Indiana to Ten- 

 nessee and Texas. 



5. Hadropterus Agassiz. Like Alvordius, belly with a series of 

 large persistent scales: i species. 



H. nigrofasciatus Agassiz. Length 150 mm.; head 4; depth 5; color 

 dark olive; sides with 12 narrow vertical bars, confluent along the 

 middle; no red or blue; body stout, compressed; fins large; dorsal fins 

 XII- 1 1 or 12; anal II, 9 or 10; scales 7-58-15: South Carolina to Louisi- 

 ana, in larger clear streams; often common. 



6. Swainia Jordan and Evermann. Gill membranes united; 

 belly with ordinary scales; a conspicuous shoulder spot: i species. 



S. squamata (Gilbert & Swain). Length 125 mm.; body elongate; 

 head 3.7; depth 5.5; color yellowish olive, with 10 broad dusky bars 

 across the back, and an equal number along the lateral line; a conspicu- 

 ous black shoulder spot; rays of the dorsal fins XIV- 13; anal II, 10; 

 scales 10-82-18; cheeks and opercle scaly; gill membranes broadly united 

 across the isthmus: upper Tennessee River basin; rare. 



