OF THE UNITED STATES. 29 



2. PL xi. fig. 13. Another tooth, from the calcareous 

 strata at Timber creek/ in Gloucester county, N. J. It 

 differs from the preceding one in the absence of strisB. 

 Considerable portions of the jaw, embracing several teeth, 

 were obtained in the same beds, and are now contained in 

 the collections of the Academy : the greater part of the 

 skeleton yet remains ; but owing to the hardness of the 

 limestone, and the extent of the superincumbent mass, the 

 attempts to remove it have proved fruitless. 



3. Lieut. Mathers obtained from the marl near Shrews- 

 bury, N. J., maxillary portions of a third species, which, 

 from its elongated snout, appears to have been a Gavial. 



Vertebral bones are not unfrequent. 



Saurodon. Hays. 



S. Leanus. Hays. (Amer. Phil. Trans, vol. iii. N. S. 

 PI. xvi.) 



Portions of the jaws of an extinct animal have been 

 described by Dr. Hays under this name. These remains 

 appear to be congeneric with the Saurocephalus of Dr. 

 Harlan, (Journ. Acad. Nat. Sciences, vol. iv.) brought 

 from Missouri by Messrs. Louis and Clark. 



The Saurodon was found in the marl near Woodbury, 

 New Jersey. 



Several vertebral bones have recently been described 

 by Mr. Rogers, in the Journal of the Academy, which he 

 regards as indicating an extinct Saurian of far larger di- 

 mensions than any hitherto discovered. The specimens 

 are two vertebrae from the marl near Timber creek, Jer- 

 sey, and a single vertebral bone from the lower limestone 



