r 



TORNEA. 197 



teeth, of which the two outermost are 

 largest. Mouth in the under side of the 

 head, gaping, oval, rather compressed. 

 There are seven openings in a row behind 

 the eyes, gradually larger as they recede 

 from thence. The fins have no visible 

 rays, but merely streaks, yet they are not 

 adipose, or fat, fins. There is a prominent 

 orifice on the top of the head. The peri' 

 cardium is cartilaginous. The fish is a span 

 long. Its hind fin triangular. 



These (lampreys) are caught at this time 

 of the year, when the nights grow dark, in 

 hollow timbers of a conical shape, resem- 

 bling the wicker baskets used for catching 

 eels. The entrance is made smooth and 

 even. These timbers are laid, at the depth 

 of two ells, in the river, and kept down with 

 stones, the opening being turned to meet 

 the current. 



Some such traps are made of willow- 

 twigs not bigger than goose-quiUs, platted 

 close together into the same shape, and are 

 two ells in length. 





