OF THE UNITED STATES. 31 



S PI. xi. fig. 1. With an entire edge, and an appen- 

 dage at each basil margin. Arenaceous beds of New 

 Jersey. 



S PI. xi. fig. 2. Lanceolate, curved, longitudinally 



striated. New Jersey and Alabama. 

 S PI. xi. fig. 3. Lanceolate, curved, smooth, with late- 

 ral basal appendages. New Jersey and South Caro- 

 lina. 



S PL xi. fig. 4. With serrated edges. 



S PL xi. fig. 5. With entire edges, and basal appen- 

 dages. New Jersey. Probably allied to S. zygcena. 

 S. Cuvieri? PL xi. fig. 6. See Mantell's Geology of the South 

 • East of England, p. 132. A similar tooth is re- 

 ferred to S. mustilus, by Parkinson, Org. Rem. 

 vol. iii. pi. xix. fig. 3. 



S PL xi. fig. 11. Curved, with a basal appendage. 



New Jersey. 



S PL xii. fig. 2. Compare with Parkinson, Org. 



Rem. pi. xix. fig. 11. Pound in both the arena- 

 ceous and calcareous strata. 

 S PL xii. fig. 3. Lanceolate, with coarsely ser- 

 rated edges, and obscure basal appendages. New 

 Jersey. 



S."~. PL xii. fig. 4. Curved, with coarse marginal 



serrations, and large, auricular basal appendages. 

 New Jersey. 

 S PL xii. fig. 5. With serrated edges. New Jer- 

 sey. 

 Vertebral bones and teeth of the shark are also 'represented, 

 PL 15, fig. 14, and pL 19, fig. 11 and 13. 



