428 EXTINCT MAMMALIA OF NORTH AMERICA. 



1847, 47. In part of Carus, etc. : Resultate geol. aiiat. u. zool. Uutersuchungen ueber Hy- 



drarchos, 1847, 5. 

 Ilydrardms v. Hydrarchos, in part of Koch : as above; Jalirb. f. Min. 1847, 717. Do. of Carus, 



etc. : as above. Muller : Archiv. f Auat. 1847, XIV, 363. 

 Basilosaurus cetoides, Gibbes : Jour. Ac. Nat. Sc. 1847, I, 15, PL I, Figs. 1—4, 8. Geiuitz : Result. 



geol. etc. Hydrarchos, 1847, 1. Reichenbach : Ibid. 13. 

 Zeuglodon macrospondylus, Muller : Monatsb. d. Akad. Wissens. Berlin, 1847, 103 ; Archiv f. 



Anat. 1847, XIV, 388 ; Ueber d. Zeuglodonten v. Nordamerika, 1849, PL I, Fig. 1 iu part; 



II ? ; V, Figs. 2—5 ? ; VI ? ; VII ? ; VIII, Figs. 1, 2, 4—8 ; IX, X, XI ? ; XII, Figs. 1—10 ; 



XIII, Figs. 3, 4?; XIV— XVII ; XIX, Fig. 6 ; XX, series I; XXII; XXIII, Figs. 3—5. 



In part of Koch : Naturw. Abh. v. Haidinger, 1851, IV, 53. Pictet: Paloont. 1853, I, 378. 



Bronn : Leth. Geog. 1853-6, 769. 

 Phocodon s. Squalodon, in part of Agassiz : Am. Jour. Sc. 1847, IV, 421. 



ITydrarchus macrospondylus, in part of Koch: Naturw. Abh. v. Haidinger, 1851, IV, CO, PL VII. 

 ZeiKjlodon trachysjwndyhis, Koch : Naturw. Abh. v. Haidinger, 1851, IV, 57. 

 Zeuglodon ITydmrchxis, s. Hydrarchos, in part of Koch : Ibidem, PL VII. 



Kemains of the great Basilosaurus have been found in Alabama, Louisiana, Missis- 

 sippi, and Arkansas. Eocene. 



DORUDON. 

 Dorndon serratus. 



Gibbes : Proc. Ac. Nat. Sc. 1845, II, 254, PL I. 



Dorudon, Gibbes : Am. Jour. Sc. 1845, XLIX, 216 ; Proc. Ac. Nat. Sc. 1848, 57. Agassiz : Proc. 



Ac. Nat. Sc. 1848, 4. 

 Basilosaurus serratus, Gibbes : Jour. Ac. Nat. Sc. 1847, I, 15, PL III, Figs. 1-3 ? PL IV. 

 Zygodon, Koch: Jahrb. Min. 1845, 676 in part. 

 Zeuglodon, Owen : Proc. Ac. Nat. Sc. 1846 ; HI, 15. Meyer : Jahrb. f. Min. 1847, 669. Tuomey : 



Rep. Geol. South Carolina, 1848, 156, 208. 

 Bear, Owen : Jour. Ac. Nat. Sc. 1847, I, 10. 

 Hydrarchus Harlani, in jiart of Koch : Kurze Beschreib. d. H. Harlani, Dresden, 1847 ; Jahrb. f. 



Min. 1847, 47. Carus : Resultate, etc. Hydrarchos. 

 Basilosaurus cetoides, in part of Gibbes ; Jour. Ac. Nat. Sc. 1847, I, 5, PL II, Figs. 1-8 ; III, Figs. 



4-6 ; Proc. Am. Assoc. 1849, II, 193. 

 Basilosaurus Koehii, Reichenbach : in Carus' Resultate geol. etc. Hydrarchos, 1847, 13. 

 Zeuglodon brachyspondylus, Miiller : Monatsb. d. Akad. Wissens. Berlin, 1847, 103 ; Archiv f. 



Anatomie, 1847, XIV, 388 ; Ueber d. Zeuglodonten v. Nordamerika, 1849, Pis. I, Fig. 1, in 



part, Figs. 2, 3 ; III-V, Fig. 1 ; VIII, Figs. 3, 9, 10; XII, Fig. 11 ? XIII, Figs. 1, 2, 6, 7 ; 



XVIII; XIX, Figs. 1-5 ; XX, series II and III; XXI; XXIII, Fig. 4 ; XXVI; XXVII, 



Figs. 1, 2, 6. Bronn : Leth. Geog. 1853-6, HI, 770. 

 Zeuglodon pyymcms fin part of Muller : Ueber d. Zeuglodonten v. Nordamerika, 1849, page 29, 



PL XIX, Figs. 1-5. 

 Zegulodon Hydrarchus, Carus : Nov. Act. Acad. Nat. Cur. 1850, XXII, 369, PI. XXXIX A, Figs. 



1-3 ; XXXIX B. In part of Koch : Naturw. Abh. v. Haidinger, 1851, IV, 57, PL VII. 

 Pontogeneus piriscus, Leidy : Proc. Ac. Nat. Sc. 1852, 52. 

 Doryodon serratus, Cope : Proc. Ac. Nat. Sc. 1867, 155. 

 Delphinoid, Cope : Proc. Ac. Nat. Sc, 1868, 186 ; 1869, 6. 



