94 GENUS CATOSTOMUS. 



town, within six miles of Philadelphia^ and presented to 

 me by my friend Mr. Ord. 



I have since seen a fish which resembled the above, 

 but it wanted the snout tubercles. Perhaps it may be the 

 opposite sCk. On this question I am not at present pre- 

 pared to decide. 



After the foregoing description was in type, I had 

 the satisfaction of meeting in the market of Philadelphia, 

 several large specimens of this species, one of which I 

 procured, and it measured from the end of the snout to 

 the extremity of the caudal fin twelve inches, three inches 

 deep at the base of the dorsal fin, and one inch and a half 

 in thickness; its scales were distinctly radiated, and re- 

 flected brilliant iridesent colours, resembling those of the 

 neck of some varieties of the house Pigeon; the colour of 

 the pectoral, abdominal and anal fins was of a pale orange; 

 the bands, which in the first described individual were dis- 

 tinct, were hardly perceptible in the present; the snout tu- 

 bercles appeared to have fallen off, leaving a pale spot, en- 

 circled with brown, and a larger ring of yellow; irideS 

 brown, pupil black surrounded with a reddish ring, 



P. 16.— D, 15.— V.9.-.A. 10.— C. 181 rays. 



4. C. macrolepidotus. Dor sal Jin short, greatly hollow- 

 ed, upper lobe elevated and pointed, lower lobe rounded. 



Body a little compressed and fusiform, elevated on its 

 anterior part, rounded near the nape; head somewhat de- 

 clivous, and, longer than deep^ anal Jin strait, long, and 

 passing the base of the caudal; pectoral and abdominal Jins 

 small; caudal Jin forked, with pointed lobes, and of a gray 

 colour; dorsal^ anal and ventral fins tinted with blue and 

 yellowj scales large, and disposed in a lozenge form; colour 



