308 FISHES. 



spring, becoming orange in summer, black at other 

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

 head 3f ; D. I, 8; A. I, 7; lat. 1. 65. New England to 

 Ohio Valley, in clear brooks; abundant Eastward. 



4. R. obtusus, Ag. BROWN- NOSED DACE. Similar; 

 sides with a brown band, edged above and below with 

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

 63 to 70. Western streams. Usually paler than the 

 preceding and more robust in form; probably a variety 

 rather than a distinct species. (R. lunatus, Cope.) 



*** Snout projecting; barbels quite evident; form stoutest; depth 

 4J- in length. 



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

 barbels long and distinct; snout projecting, narrowed, 

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

 A. I, 7. Illinois and Iowa. 



23. EXOGLOSSUM, Rafinesque. STONE TOTEES. 



1. E. maxillilingua, (LeS.) Haldeman. DAY CHUB. 

 CUT- LIPS. NIGGER CHUB. Body stout; depth 4 in 

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

 hind midway between snout and caudal; dusky above, 

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

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

 to Virginia; a fish of remarkable appearance, singularly 

 distinguished from all our other Cyprinidce by the three- 

 lobed lower jaw. 



24. CARASSIUS, Nilsson. CRUCIAN CARPS. 

 1. C. auratus, (L.) Bleeker. GOLD FISH. Orange or 

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

 ceedingly variable in domestication. Asia; common every 

 where in aquaria, Lnd now naturalized in many of our 

 eastern streams. 



