294 Annals of the Carnegie Museum. 



the centra of the anterior vertebrae, though the last eight or nine 

 rapidly decrease. The centrum of the seventh dorsal in the specimen 

 of C. floridamts before me certainly is rather under than over the 

 average length of the members of the series. The length of the seventh 

 dorsal in D. hatcheri is almost exactly six inches. The number of 

 vertebras in the total series is sixty (?). This would give us a length 

 of thirty feet, without taking into account the length of the skull from 

 its point of union with the atlas to the tip of the snout, which in C. 

 floridanus is as 13 to 60. Applying this proportion to the case in hand 

 we would have a length of from five to six feet for the skull. Adding 

 this to the length of the vertebral column back of the head we have 

 thirty-five as the total length of the bony framework of the animal. 

 It is therefore no exaggeration to say that D. hatcheri must have been 

 a crocodile which possessed a length of from thirty-five to forty feet, 

 exceeding thus in length the largest specimen of C. porosus of which 

 we have record, which is said to have been thirty-three feet in length, 

 and therefore the longest crocodile belonging to a living species, which 

 has ever been observed. 



Deinosuchus hatcheri was undoubtedly one of the hugest representa- 

 tives of the Crocodilia which has existed upon our globe. 



