VERTEBHAL COLUMN OF FISHES. 



Gl 



or pleurapophyses {fg. 19. pi, pi) are usually appended to the 

 extremities of the parapophyses, the articulation frequently present- 

 ing a reeiprocal notch in each. But, in some bony fishes, as Flatax, 

 the ribs articulate with the bodies of the vertebra), in depressions 

 behind the parapophyses; and in Polypterus beneath the para- 



