SQUALODOIS'TID.5:. / O 



32730. The greater portion of a mandibular symphysis, provisionally ^.A^r <?*■'' 



referred to this species ; from the Upper Tertiary of 



Xabregas, near Lisbon, Portugal. Ten teeth remain on 



either side, although some of their crowns are broken off. 



Presented hy J. B. Valentine^ Esq. About 1857. 



Family SQUALODONTID^. 



The cranium resembles in essential characters that of the DelpM- 

 nidce, and differs entirely from that of the Arcliceoceti, although the 

 teeth are differentiated into groups as in the latter. 



Genus SQUALODON, Grateloup\ 



Syn. Pachyodon, Meyer ^. 

 Phocodon, Agassiz ^. 

 (?) Arionus, Meyer ^ 

 Pfelphinoides, Pedj'oni ^. 

 Cremdelphinus, Laurillard ^. 



Stereodelphis, Gervais 

 Pelphinodon, Leidy ^. 

 liliizoprion, Jourdan ^. 

 Macrophoca, Leidy ^°. 



Pig. 15. 



Three of the lower true molars of Squalodooi. Miocene. 

 (After Scilla.) 



1 Act. Ac. R. Sci. Bordeaux, 1840, p. 208. 



^ Neues Jahrb. 1838, p. 414. This name is the earhest, but was preoccupied. 



^ lu Valentin's Rep. dAnat. et Physiol. 1841, p. 235. — Teste Brandt. 



* Neues Jahrb. 1841, p. 315. 



^ Coinptes Rendiis. toI. xxi. p. 1181 (1845). 



« Diet. Univ. d'Hist. Nat. vol. iv. p. 636 (1846). 



"^ Zool. et Pal. Fran9aises, 1st ed. vol. i. p. 152 (1848-52). 



^ Journ. Ac. Nat. Sci. Philad. ser. 2, vol. vii. p. 424 (1869). 



3 Ann. Sci. Nat., Zool. ser. 4, vol. xvi. p. 369 (1861). 



Proc. Ac. Nat. Sci. Philad. 1856, p. 220. 



