)8 FISHES. 



ring, becoming orange in summer, black at other 

 nes; fins often rosy in spring; depth 4f in length; 

 lad'Sf; D. I, 8; A. I, 7; lat. 1. 65. New England to 

 aio Valley, in clear brooks; abundant Eastward. 



4. R. obtusus, Ag. Bbown- Nosed Dace. Similar; 

 ies with a brown band, edged above and below with 

 ,ler; head 4 or more in length; D. I, 8; A. I, 8; lat. 1, 

 1 to 70. Western streams. Usually paler than the 

 eceding and more robust in form; probably a variety 

 ther than a distinct species. {B. lunatics, Cope.) 



* Snout projecting; barbels quite evident; form stoutest; (fepth 

 4J- in lengtli. 



5. R. meleagris, Agassiz. Head 4 — 4^ in length; 

 xbels long and distinct; snout projecting, narrowed, 

 erlapping the lower jaw; eye small, 5 in head; D. I, 7; 

 . I, 7. Illinois and Iowa. 



23. EXOGLOSSUM, Rafinesque. Stone Totees. 



1. £. maxillilingua, (LeS.) Haldeman. Day Chub. 

 JT-Lips. NiGGEE Chub. Body stout; depth 4^ in 

 ngth, head 4; eye small, nearly 5 in head; dorsal be- 

 ad midway between snout and caudal ; dusky above, 

 blackish shade along caudal peduncle; D. I, 8; A. I, 8; 

 1. 1. 50 to 55; L. 4 to 6. W. N. Y. (Susquehanna basin) 

 Virginia; a fish of remarkable appearance, singularly 

 stinguished from all our other CyprinidcB by the three- 

 bed lower jaw. 



24. CARASSIUS, Nilsson. Crucian Caeps. 

 1. C. aurafus, (L.) Bleeker. Gold Fish. Orange or 

 ackish, rarely pale; D. I, 19; A. I, 8; lat. 1. 26; ex- 

 edingly variable in domestication. Asia; common every 



