CETACEA. 61 



Order CETACEA. 



Teeth all similar, conical; or dissimilar, ridged; sometimes not 

 developed. 



Palate often furnished with transverse plates of halem or whale- 

 bone. 



Body fish-shaped, nearly bald, ending in a horizontal tail. 



Front limbs short, fin-shaped. 



Mammalia, Cete, lAnn. Syst. Nat. ed. 12. i. 27 ; Link, Beytr. 1795 ; 

 , Desm. N. B. H. N. xxiv. 35, 1804; Fischer, Syn. 1828; Eichwald, 



Zool. Spec. iii. 337 ; Gray, Ann. Phil. 1825. 

 Oeti, Wagler, Amph. 1830. 

 Lbs C^tac^s, Cuvier, Tab. Mem. 1798; JR. A. i. 271, 1817, ed. 2. i. 281; 



F. Cuvier, 1829. 

 Cetacese, JBrisson, R. A. 217, 1762 ; Gray, Med. Rep. xv. 309, 1821. 

 M. a nageoires (pars), Desm. N. D. H. N. xxiv. 32, 1804. 

 Natantia, lUiger, Prodr. 139, 1811. 



M. piimata et pinnipedia (pars), Storr, Prodr. Mamm. 1780. 

 Bipedes, Latr. Fam. Nat. 64, 1825. 

 Sirenia et Oete, Selys-Longchamps, 1842. 

 Cetacea et Amphibia (pars), jRafin. Anal. Nat. 60, 1815. 

 Cete, Gray, Cat. Cetac. B. M. 1850, 1. 

 Cetacea, R. Knox, Journ. Proc. Linn. Soc. 1858, iii. 63 ; Gray, P. Z. S. 



1864, 195 ; Proc. Zool. Soc. 1863 ; Ann. 8f Mag. Nat. Hist. 1864, 



xiv. 346. 



Stnopsis of the Tamilibs. 



Suborder I. Skin smooth, hold. Teats 2, inguinal. Limbs clawless ; fore 

 limbs ^fin-shaped ; hinder united, forming a forked horizontal tail. 

 Nostrils enlarged imto blowers. Camivorotis. Cete. 



Section I. Mysticbtb. Teeth rudimentary ; they never cut the gums. 

 Palate furnished with transverse fringed horny plates of baleen or 

 whalebone. Head large, depressed. Nostrils separate, longitudinal. 

 Gullet very contracted. Tympanic bone single, large, eochleate, at- 

 tached to an expanded periotic bone which forms part of the skull. 



1. Baljenid^. Dorsal fin none. Belly smooth. Baleen elongate, slender. 



Vertebrae of neck anchylosed. Pectoral fin broad, truncated at the 

 end ; fingers 5. Tympanic bone rhombic. Maxillary bones narrow. 



2. BAL.a;NOPTEBiDiE. Dorsal fin distinct Belly longitudinally plaited. 



Baleen short, broad. Maxillary bones broad. Pectoral fin lanceolate ; 

 fingers 4. Vertebras of neck free. Tympanic bone oblong or ovate. 



