408 



THE ANGLER-NATURALIST. 



THE LAMPERN, OR RIVER-LAMPREY. 



(Petromyzonjluviatilis*.) 



The River-Lamprey, or Lampern, is distinguished from 

 the Sea-Lamprey more particularly by its size, colour, and 

 arrangement of teeth. Its length is usually from 12 to 

 15 inches, whilst that of the Sea-Lamprey in England 

 ranges from 20 to 28 inches ; the colour of the latter is 

 mottled and spotted with dark green and brown, and in 

 the former is uniform blue on the back and sides, passing 

 into silvery white underneath. The difference in the 

 arrangement of the teeth will be observed by comparing 

 the woodcut above with that at p. 404. In other respects 

 its external characteristics closely resemble those of the 

 Sea-Lamprey before described. 



The Lampern is well known in English rivers, particu- 

 larly in the Thames, the Severn, and the Dee, and also in 

 many of the streams of Scotland and Ireland. 



* Petromyzwi, Stone-sucker, Gr. ; Jliiviatilis, of tjie river, Lat. 



