The Lamprey 263 



tion of this formidable mouth). The outer part of the mouth 

 is encircled by a strong band of skin, and the whole forms a most 

 perfect sucker, by means of which the lamprey attaches itself to 

 some stone or fish. If the latter, then it runs a great risk 

 of losing its life. The lamprey once fixed to its prey, begins its 

 deadly quest ; the outer strong edge remains stationary, whilst the 

 teeth commence to move and cut up the flesh, and ultimately gouge 

 out a deep hole in its victim. The salmon appears to be a favourite 

 with the lamprey, judging by the number that have come under 

 my notice marked in this fashion. Fig. 238 shows a sea-trout 

 marked by a lamprey. Occasionally they are brought ashore by 

 the nets, firmly fixed to a salmon, and only desist when they see 

 they run the risk of being caught. I feel sure that many salmon 

 are killed by the wounds inflicted by this gnawing creature. 



