120 Fresh Water Fishes of the United States. 



POLYODONTIDJ1. 



238. POLYODON FOLIUM, Lacepede. 

 Paddle-fish, Spoonbill Cat, Duckbill Cat. 

 Gunther, Cat. Fishes, 1870, VIII, 346. 

 White R., Illinois R., Ohio R., Mississippi R., Arkansas R. 



A C I P E N S E E I D M . 



239. ACIPENSER RUBICUNDUS, Le Sueur. 

 Red Sturgeon. 

 Dekay, Fishes of N. Y., 1842. 

 Wolf R., Fox R., L. Michigan. 



240. ACIPENSER MACULOSUS, Le Sueur. 

 Rock Sturgeon. 



Gunther, Cat. Fishes, VIII, 1870, 339. 

 Ohio R. 



241. SCAPHIRHYNCHOPS PLATYRHYNCHUS (Rafinesque), Gill. 

 Shovel-nose Sturgeon. 



Scaphirhynchus cataphr actus, Gunther, Cat. Fishes, VIII, 1870, 345. 

 Ohio R. 



PETROMYZONTID^E. 



242. AMMOCCETES FLUVIATILIS (Linn^us), Jordan. 

 Small Eastern Lamprey. 

 Petromyzon nigricans, Storer, Fishes of Mass., 1855. 

 Cayuga L. 



243. AMMOCGETES NIGER (Rafinesque), Jordan. 



Black Lamprey. 



Petromyzon niger, Jordan, Man. Vert., 1876, 315. 

 Fox R., Peckatonica R., White R., Rock R., Wabash R. 



244. AMMOCffiTEUS ARGENTEUS (Kirtland), Jordan. 

 Silvery Lamprey. 

 Ichthyomyzon argenteus, Man. Vert., 1876, 315. 

 L. Erie, White R., Ohio R. 



245. AMMOC03TES HIRUDO (Gkd.), Jordan. 

 Leech Lamprey. 

 Ichthyomyzon hirudo, Grd., Pac. R. R. Survey, 1858. 

 L. Erie, L. Michigan, Mississippi R. 



