LIFE HISTORY or LAMPREYS 



LAKE LAMPREY BROOK LAMPREY 



ORAL ARMATURE ORAL ARMATURE 



LARVAL LAMPREY 

 ORAL SIEVE 



\ 





155 MM. 



154 MM. 



ADULT LAKE 550 MM. ADULT BROOK 



YOUNG LAKE 153 MM. LAMPREY WITH LARVAL LAMPREY 



RIPE OVA IN BURROW 



YOUNG LAKE LAMPREYS 

 ATTACKING A FISH 



PAIR of LAMPREYS 

 BUILDING A NEST 



LAMPREY NESTS 

 in STREAM 



WW- 



Fig. 1. — Mouth of lake (1), brook (2) and larval (3) lamprey. Habits and 

 life of adult (4, 5, 7) and larval lampreys (6, 8). 



