CETACEA. 5 



1. BAL^ENiDvE. Nostrils 2, separate, longitudinal. Palate with 



baleen. Jaws toothless. Head very large. 



2. PHYSETERID^E. Nostrils 2, separate, longitudinal. Palate 



smooth. Lower jaw toothed. Head very large. 



3. DELPHINID^E. Nostrils united, lunate, transverse. Palate 



smooth. Jaws toothed ; rarely deciduous. Head moderate. 



Suborder II. Skin rather hairy ; whiskers rigid. Limbs clawed. 

 Teats 2, pectoral. Nostrils 2, apical. Herbivorous. Si- 

 RENIA. 



4. MANATID^E. Grinders none, or flat-crowned. Front of jaws 



covered with horn. 



Suborder I. CETE. 



Skin smooth, without hair. Limbs clawless ; fore fin-like ; 

 hinder caudal, horizontal, forked. Teats 2, inguinal. Nostrils 

 enlarged and close together, called blowers. Carnivorous. Teeth 

 conical, all similar, often not developed, and absorbed. Palate 

 often furnished with transverse, pendent, horny plates of baleen 

 or whalebone ; fringed on the edge. 



SYN. Cete, Gray, Ann. Phil. 1825; Selys Longchamps, 1842. 



Cetacea, Dum. Z. A. 1806. 



Cetacese carnivorae, Gray, Med. Rep. xv. 309, 1821. 



(Souffleurs) Hydraula, Latr. Fam. Nat. 1825, 65. 



Natantia Cete, Illiger, Prod. 141, 1811. 



Cete ft Fischer, Syn. 1828. 



M. pinnata, Storr. Prod. Mam. 1780. 



Cetaces, Cuv. Tab. Elem. 1798. 



Fam. 1. BAL^ENIDJE. WHALEBONE WHALES. 



Head very large, one-third the size of the body. Jaws of 

 young with rudimentary teeth, which are never developed ; of 

 adult toothless. Palate with crowded, transverse, triangular, 

 pendent, horny plates (whalebone or baleen), with a fibrous inner 

 edge, forming " a screening apparatus." Head large, shelving 

 in front. Blowers far back, longitudinal, separate, each covered 

 with a valve. Spout double. Gullet small. Eyes small, near 

 angle of the mouth. 



Balaena and Physeter, Linn, j Cuv. Tab. Elem. 1798. 



Balaenadae and Physeteridae, Gray, Lond. Med. Rep. xv. 310. 



Les Cachalots and Les Baleines, F. Cuv. 1829. 



Cete, Illiger, Prod. 141, 1811. 



Cetacea edentula and C. dentata, Brisson, R. A. 218, 225. 



Edentes abormaux, Blainv. 1816. 



