118 SAURIA. 



HOLCODUS. Gibbes. 



12. ? Holcodus aoutidens. 



Mosasaurus minor. Gibbes : Mem. on Mosas., Smiths. Cont. 1851, II, T, PI. I, Figs. 



3-5. 

 Holcodus acuiidens. In part, of Gibbes : Ibidem 9, PI. Ill, Figs. 6-9. 

 Pages 38, 40, 41, 42, 45, 72, Yertebrse, basi-occipital boue, tympanic boae, humerus, radius, and 

 pterygoid bone with teeth, from Mississippi. PI. VII, Figs. 4-7 ; PL VIII, Figs. 1, 2, 7 ; PL XI, Fig. 14. 

 Page 77, Tooth, No. 33. PL X, Fig. 17. 



BASEODON. Leidy. 



13. Baseodon reversus. 



Pages 30, 31, Teeth, No. 30. PL X, Figs. 14, 15. 



Mosasauroid Bemains of Uncertain Reference. 



a. Amphorosteus Brumhyi. Gibbes: Mem. on Mosas., Smiths. Cont. 1851,11, 10, PL 

 III, Figs. 10-14. 



b. Page 45, Two bones of extremities. PI. VIII, Figs. 9, 10. 



MACROSAURUS. Owen. 



14. Macrosaurus laevis. 



Macrosaurus lasvis. Owen : Jour. Geol. Soc. Loud. 1849, V, 380, PL 

 Macrosaurus. Emmons : Rep. North Car. Geol. Surv. 1858, 213, Fig. 34 a. 

 Pages 74, 75. PL III, Figs. 1, 2 ; PL VII, Figs. 19, 20. 



POLYGONODON. Leidy. 



15. Polygonodon vetus. 



Polygonodon vetus. Leidy : Proe. Ac. Nat. Sc. PhiL 1856, VIII, 221. 



Polygonodon rectus. Emmons: Rep. N. Car. Geol. Surv. 1858, 218, Fig. 37, A; Manual 



of Geology, 1860, 208, Fig. 3. 

 llossoxatirus rectus. Emmons: Ibidem 218. 

 Page 76, A tooth, from Burlington Co., N. J. PL IX, Figs. 12, 13. 



HADROSAURUS. Leidy. 



16. Hadrqsaurus Foulkii. 



Hadrosaurus Foulkii. Leidy: Proc. Ac. Nat. Sc. Phil. 1858, 218. 

 Pages 76-97. PL II, Figs. 9-11 ; PL VIII, Fig. 13; PI. XII, Figs. 1-20; PL XIII, Figs. 1-19, 

 24-26; PL XIV, Figs. 1-12; PL XV, Figs. 1-6, PI. XVI, Figs. 1-8; PL XVI, Fig. 4; PL XX, 

 Figs. 1, 2. 



Bemains of Undetermined Reptiles allied to Hadrosaurus. 



a. Page 97, Humerus, from Monmouth Co., N. J. PL XVII, Figs, 1-3. 



b. Page 98, Fragments of femora, from Gloucester Co., N. J. 



c. Page 99, Fragments of a femur and fibula, from Monmouth Co., N. J. 



