CETACEA. 61 



Order CETACEA. 



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

 developed. 



Palate often furnished with transverse plates of baleen or whale- 

 bone. 



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



Front limbs short, fin-shaped. 



Mammalia, Cete, Linn. Sj/st. Nat. ed. 12. i. 27 ; Link, Beytr. 1795 ; 



Besm. N. D. H. N. xxiv. 35, 1804 ; Fischer, Stjn. 1828 ; Eichwald, 



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

 Ceti, Waf/ler, Ampli. 1830. 

 Les Cetac^s, Cuvier, Tab. Ekm. 1798 ; R. A. i. 271, 1817, ed. 2. i. 281 ; 



F. Cuvier, 1829. 

 CetaceiB, Brisson, R. A. 217, 1762 ; Gray, Med. Rep. xv. 309, 1821. 

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

 Natantia, Illiyer, Prodr. 139, 1811. 



M. pinnata et pinnipedia (pars), Storr, Prodr. Mamni. 1780. 

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

 8irenia et Cete, Selys-Lonychamps, 1842. 

 Cetacea et Amphibia (pars), Rafin. 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. ^ Mag. Nat. Hist. 1864, 



xiv. 345. 



Synopsis of the Families. 



Suborder I. Skin stnooth, bald. Teats 2, inguinal. Limbs claidess ; fore 

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

 Nostrils enlarged into blowers. Carnivorous. Cete. 



Section I. Mysticete. Teeth rudimentary : they never cut the gums. 

 Palate furnished loith transverse fringed horny i^lates of baleen or 

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

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

 tached to an expanded 2ieriotic bone which forms part of the skull. 



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



Vertebrse of neck anchylosed. Pectoral fin broad, trmicated at the 

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



2. Baljenopterii)^. Dorsal fin distinct Belly longitudinally plaited. 



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

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



