li MANATUS. 



horny plate attached anteriorly which supplies the place of teeth. 

 Molar teeth in both jaws similar in character, square, enameled 

 crowns elevated in transverse tuberculated ridges; those in the upper 

 rows having two ridges and three roots, those in the lower three 

 ridges and two roots. 



5. latirostris. {Manatus), Harl. Journ. Acad. Nat. Sci. Phil., 1823, 

 p. 390. 



manatus, (Trichecus). Linn. Syst. Nat., 1766, p. 49. 



ausiralis, Tilesius, Jahrb. Naturg. , i, 1802, p. 23. 



amcricanus, Desm. Diet. Hist. Nat., 1817, p. 262. pi. 96, (Part). 

 fluviatilis, Illig. Wagn. S. S. S., pi. 279. 



Type locality. East coast of Florida near the Cape. 



Geog. Distr. Florida coast. 



Gcnl. Char. Those of the genus. 



Color. Grayish black over all the body. 



Measurements. Total length, 2268. Skin. Skull: total length, 

 13.5 in.; width of occiput, 7.4; occipital crest to superior border of 

 the nares, 5.5; length of opening of anterior nares, 6.3; width of 

 same, 4.3. 



