Remains in Magnesian Conglomerate. 357 



the vertebra bring- them nearer the Crocodiles of the recent genera and the 

 Enahosaurians of the extinct. 



The double concave system and the biconical form of tiie bodies or annular 

 portions are worthy of notice as characteristic of all the older Saurians yet 

 discovered, as well as an a|)proach to that of Fishes found in strata of a still 

 earlier date. In the chain -like shape of the spinal canal, or, in other words, 

 the difference in vertical diameter of the canal corresponding to the middle of 

 each vertebra, we have a character entirely new to us ; we shall avail our- 

 selves of further opportunities to observe it. 



3 A 



