210 



THE STORY OF FISH LIFE. 



Sturgeons, origin of, 17. 

 skull of, 48. 



eggs of, 113. 



,, ancestral, 180. 

 Sucker-fishes, fins of, 64. 

 Sun-fish, food of, 133. 



,, young of, 137. 



,, form of, 165. 

 Sword-fish, feeding of, 87. 



,, transformations, 135. 



T. 



Tail, forms of, 53. 



,, position of, 60. 

 Teeth, evolution of, 38. 



,, forms of, 42. 

 Teleostomi, meaning of, 176. 

 Tench, winter sleep of, 150. 

 Thallassophryne, poison of, 



156. 

 Thresher, feeding of, 84. 



Toothed-carp, affinities of, 



189. 

 Tortoise -fish, armour of, 31. 



Undina, tail of, 57, 179. 

 Urolophus, poisonous tail- 

 spines of, 154. 



V. 



Vertebral column, structure 

 of, 170. 



Walking-fish, breathing of, 23. 

 Weaver-fish, poisonous, 155. 

 Whiting, feeding of, 31. 

 Wrasses, colours of, 71. 



