138 CETACEA. 



Suborder II. SIRENIA. 



Body rather hairy. Muzzle bristly. Nostrils 2, separate, 

 apical, lunate, valvular. Fore-limbs arm-like, clawed; hinder 

 compressed, expanded, tail-like. Teats 2 pectoral. Teeth of two 

 kinds. 



Cete IT. pars, Gray, Ann. Phil 1825. 



(Natantia) Sirenia, Illiger, Prod. 139,1811; Brandt, Symb. Sireno- 



logia, 132, 1846. 



Sirenia, Gray, Selys Long champs, 1842; Schinz. Mam. 491. 

 M. Amphibies, pars, Cuvier, Tab. Elem. 1798 ; Dum. Z. A. 1806. 

 M. Amphibia, pars, Rajin. Anal. Nat. 60, 1815. 

 Onguligrades anomaux, Blainv. 1816. 

 Les Cetaces Herbivores, F. Cuv. 1829. 

 Cetacea herbivora, Gray, Lond. Med. Rep. xv.309, 1821; Latr. 



Fam. Nat. 1825, 64; Brandt. 

 Cete A., Fischer, Syn. 1828. 



Ceti hydraeoglossi, a, Wagler, N. S. Amph. 32, 1830. 

 Heterodonta, Hydraula, ou Sireniae, Lesson, N. Reg. Anim. 134, 



1842. 



Manatina, Reich. Syn. Mam. Cetac. 15. 

 Silliche, Oken, Lehrb. Nat. 684. 



Fam. 4. MANATID^. 



Muzzle bristly; lips single; front of upper and lower jaws 

 each covered with a hard, horny, porous, corrugated plate. Cut- 

 ting teeth 2 or 4 above, large, conical and exserted, or small, 

 abortive, and early deciduous. Canine none. Grinders f -f to 

 |, tubercular, the front one deciduous. Nostrils 2, separate, 

 lunate, valvular. Eyes small; ears none. Teats 2 pectoral. 

 Stomach divided into four cells, two of them appendaged. 



Sirenia, Illiger, Prod. Mam. 181. 



Manatidae and Dugongidae, Gray, L. Med. Rep. xv. 309, 1821 ; 



Ann. Phil. 1825. 



Trichecus, pars, Cuv. Tab. Elem. 1798. 

 Manatidae, pars, Selys Long champs, 1842. 

 Halicoridse, Gray, Ann. Phil. 1825; List Mam. B. M. 106. 

 Sirenia dentigera seu Halicoreae, and Sirenia edentata seu Rhy- 



tiniae, Brandt, Symb. Sirenol. 132, 1846. 

 Amphibia tetrapia Odobenia, Amphibia Diopia, Rafin. Anal. Nat. 



60, 1815. 



Sireniae, pars, Lesson, N. Reg. Anim. 154. 

 Manatina, Reichb. Syn. Man. 15. 



