324 CARTILAGINEI. PETROMYZONID^. 
It is said to be an ancient custom for the city 
of Gloucester to present for the royal table^ once 
every year, a pie of Lampreys, covered with a 
raised crust. King Henry I. met his death 
through his fondness for this worm -like fish ; 
his mortal sickness having been produced by eat- 
ing to excess of Lampreys, after a day spent in 
hunting. 
There are one or two other species of the genus 
found in our waters, but they are small, and of 
no importance. 
'.li 
