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 precediag one in the absence of striz. 
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. 
Sauropon. lays. 
S. Leanus. Hays. (Amer. Phil. Trans. vol. ii. N. 5. 
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 
