108 GENUS CATOSTOMUS. [October. 



Weighs about two pounds and a half. Not deemed 

 a palatable food. 



This is the description of the first species, which was 

 made known to naturalists, of the present genus; extracted 

 from the sixty- third volume of the Transactions of the 

 Royal Society of London. I have never yet seen a fish to 

 which Forster's description would apply; and I do not 

 hesitate to assert that this species is distinct from all those 

 recorded in this Monograph. It possesses a remarkable 

 character in its long pectoral fins, which are longer than 

 those of any of my species, with the exception of the elon- 

 gatus of tht Ohio. 



15. C. teres. Fresh- water Sucker. [Cyprinus teres.) 

 With elongated round body. Low, soft, puckered mouth, 

 and tail nearly even. 



Mouth under, toothless, and w^ith a soft and puckered 

 orifice. Head rather small. Back thick and round, {cylin* 

 drically,) Back and sides a speckled black and white. 

 Belly whitish. Pectoral, abdominal, and anal fins yellow- 

 ish. Dorsal and caudal dark brown. 



Lateral line straight. Abdomen large and frequently 

 flabby. Rays of the fins coarse. Tail almost even. 



Lihabits fresh brooks, ponds, and rivers, and in many 

 of them is taken very abundantly. Grows to the size of 

 twelve and fifteen inches. Is, perhaps, the C. catostomus* 



The swimming bladder is divided into two sacks or 

 cells, having connection by a small tube. 



P. 17.— V. 9.— A. 8.— D. 13.— C. 19 rays. 



16. C. ohlongus. Chub of Newyork. [Cyprinus 

 cthlongus») Mouth under, small, puckered, and toothless. 



