2C4 



ANATOMY OF VERTEBRATES. 



used in modifying the course through the water. The fore limbs 

 were shorter, and tlie hind limbs longer in the extinct Crocodilia 

 of marine habits. The stiffness of the neck, produced liy the 

 overlapping of the expanded cervical ribs, adds to the power of 

 the head in overcoming the resistance of the water ; but detracts, 



163 



Flying Uzai-d f Z)/'flro ?'n/(riis\ Linn. cciv. 



with the almost inflexible cuirassed trunk, from the capacifv to 

 capture prey on land, which is seldom overtaken, cxccjit by a 



