116 SAURIA. 
Crocodiles of Uncertain Reference. 
. Page 16, Vertebre, from Jobstown, Burlington Co., N. J. PI. II, Fig. 6. 
. Pages 16, 17, A cervical vertebra, from St. George’s, New Castle Co., Del. PI. II, Fig. 7. 
. Page 17, Fragment of a left dental bone, from Monmouth Co., N. J. Pl. IV, Figs. 22, 23. 
. Page 17, Fragment of a small Gavial skull, from Burlington County, N. J. Pl. I, Fig. 8. 
Page 17, Four teeth, from Blackwoodtown, Camden Co., N. J. Pl. I, Figs. 7, 8, 9. 
Page 17, Two teeth, from North Carolina. PI. III, Figs. 22, 23. 
Page 18, A dermal plate, fragment of a jaw and a tooth, from Burlington Co., N. J. 
ayecasoa 
POLYPTYCHODON. Owen. 
5. Polyptychodon ? rugosus. 
Polyptychodon rugosus. Emmons: North Carol. Geol. Surv. 1858, 219, Fig. 38. 
Page 18, A tooth, from Elizabethtown, Bladen Co., N. C. 
HYPOSAURUS. Oven. 
6. Hyposaurus Rogersii. 
Hyposaurus Rogersti. Owrn: Jour. Geol. Soc. Lond. 1849, V, 380, Pl. XI, Figs. 7-10. 
Holccdus acutidens. In part, of Gippes: Mem. on Mosasaurus, &c., Smiths. Contrib. 
1850, II, 9, Pl. III, Fig. 13. 
Pages 18-21, Pl. III, Figs. 4, 16-21; Pl. IV, Figs. 1-12. 
DISCOSAURUS. Leidy. 
7. Discosaurus vetustus. 
Discosaurus vetustus. Lxrtpy: Pr. Ac. Nat. Se. Phil. 1851, 326. 
Pages 22-25, Pl. IV, Figs. 13-18; Pl. V, Figs. 1-12. 
CIMOLIASAURUS. Leidy. 
8. Cimoliasaurus magnus. 
Cimoliasqurus magnus. Letpy: Pr. Ac. Nat. Sc. Phil. 1851, 325; 1854, 72, Pl. II, 
Figs. 46. 
Fages 25-29, Pl. V, 13-19; Pl. VI, Figs. 1-18 
PIRATOSAURUS. Leidy. 
9. Piratosaurus plicatus. 
Pages 29, 30, Pl. XIX, Fig. 8. 
MOSASAURUS. Conybeare. 
10. Mosasaurus Mitchelli. 
Saurian resembling the Reptile of Maestricht. Mrrcnetn: Obs. Geol. North America, 
1818, 384, 385, Pl. VIII, Fig. 4. 
Saurian resembling the Maestricht Monitor. Hannan: Jour. Ac. Nat. Sc. Phil. 1825, 
IV, 235, Pl. XIV, Figs. 24; Mcd. Phys. Res. 1835, 384. 
