J3 6 UNCTUOUS SUCKER. Class IV. 



Descrip. The length is five inches : the color when frefh 

 taken a pale brown, fometimes finely (creaked with 

 a darker ; the fliape of the body round, but near 

 the tail comprefTed Tideways: the belly is white 

 and very protuberant. 



The head is large, thick, and round. There are 

 no teeth in the mouth, butthejaws are very rough : 

 the tongue very large : the eyes very fmall. 



The orifice to the gills is very fmall. It has fix 

 branchioftegous rays. 



The pectoral fins are very broad, thin, and 

 tranfparent, and almofi unite under the throat. 

 The fir ft ray next the throat is very long, extends 

 far beyond the reft, and is as fine as a hair. Over 

 the bafe of each is a fort of operculum, or lid, 

 ending in a point : this is capable of being raifed 

 or deprefTed at pleafure. 



Behind the head begins the dorfal fin, which 

 extends quite to the end of the tail : the ventral 

 fin begins at the anus, and unites with the other at 

 the tail. 



Beneath the throat is a round deprefiion of a 

 whitifh color, like the impreftion of a feal, fur- 

 rounded with twelve fmall pale yellow tubera, by 

 which it is probable it adheres to the ftones like 

 the' other fpecies. 



Lefler 



