REPRINT OF ORIGINAL TEXT 109 



ton, in the month of April 1820, and now preserved 

 in the Museum in Lexington. Its head is very- 

 remarkable, soft and fat all over, the snout sloping, 

 broad, truncate with soft warts in front, mouth at its 

 inferior extremity very small, elliptical transversal, 

 with equal circular hard lips. The whole head and 

 even the eyes are of dusky and bluish black colour. 

 Pectoral fins trapezoidal with 1 5 rays, the upper rays 

 of the colour of the head. Tail olivaceous lunu- 

 lated, with 20 forked rays and 5 short simple rays on 

 each side of the base. Abdominal fins quadrangu- 

 lar. The first ray of the dorsal is singular, thick, 

 short, hard, and yet blunt, almost cartilaginous, or 

 not properly spinous, and not at all serrate as in the 

 Carps. Scales pretty large. 



XX Genus. Sucker. Catostomus. Catostome. 



Body oblong cylindrical scaly. Vent posterior or 

 nearer to the tail. Head and opercules scaleless and 

 smooth. Mouth beneath the snout, with fleshy, 

 thick, or lobed sucking lips. Jaws toothless and 

 retractible. Throat with pectinated teeth. Nostrils 

 double. Gill-cover double or triple. Three bran- 

 chial rays to the gill membrane. A single dorsal fin 

 commonly opposite to the abdominal fins, which 

 have from eight to ten rays. 



[II. 300] Lesueur has established this genus, in 

 the fi.rst volume of the Journal of the Academy of 

 Natural Sciences of Philadelphia, with all the Ameri- 

 can species of the genus Cypri?ms which have the 

 above characters, and he has described eighteen 

 species belonging to it. I have discovered twelve 

 additional new species in the waters of the Ohio, 

 where about sixteen new spe- [j^] cies have already 



