350 MANATIDiE. 



Suborder IT. SIRENIA. 



-r . .i„ T^^j^fi^ Nostrils 2, separate, apical, 

 hi . . ™i 



^^/ 



aWjX 



V 



lK>a^\ ^ 



**-♦-> 



'N 



*^ *>i~A 



;, 



>^ 



Muzzle bristly ; lips single ; tront oi •.^^^,^^.^ . . 

 covered with a hard, horny, porous, corrugated plate. Cutting-teetn 

 2 or 4 above, large, conical, and exserted, or small, abortive, and 

 early deciduous.' Canine none. Grinders |- . f to f . f , tubercular, 

 the front one deciduous. Nostiils 2, separate, lunate, valvular. 

 Eyes swjiil, ears none. Teats 2, pectoral. Stomach divided into 

 four cells, two of them appendaged. 



Sirenia, Uliyer, Prodi: Mcmun. 181. 



Manatidfc et Dugongidse, Gray, L. Med. Rep. xv. 309, 1821 ; Ann. 



Phil. 1825. 

 Trichecus (pars), Cuv. Tab. EUm. 1798. 

 Manatidfe (pars), Selys-Longchavips, 1842. 

 Ilalicoridaj, Gray, Ann. Phil. 1825 ; List Mamm. B. M. 106. 

 Sirenia dentigera seu Halicoreffi, et Sirenia edentata seu Rhytinise, 



Brandt, Symb. Sirenol. 132, 1846. 

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



60, 1815. 

 Sirenise (pars). Lesson, N. Rbg. Anim. 154. ^ 





