Order III. Sirenia. Sirenians. 



Family I. Hydroclaiualidse. 



Genus 13. Hyclrodanialis. Sea Cows. 



Hydrodamalis Retzius, Kongl. Vetensk. Acad. Nya. Handl. Stock- 

 holm, XV, 1794, p. 292. Type Hydrodamalis stelleri Retzius = 

 Manatus gigas Zimmermann. 



Rytina Illig., Prodr. Syst. Mamm. et Av., 181 1, p. 141. 



Rhytina Glog., Hand- u. Hilfsb. Naturg., 1841, pp. xxxiv, 165. 



26. Hydrodamalis gigas (Zimmermann). 



Manatus gigas Zimm., Geogr. Gesch., 11, 1780, p. 426, fig. 5. 



Hydrodamalis gigas Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 5, pi. II. Zool. Ser, 

 Steller's Sea Cow. 



Type locality. Shores of Bering Island, Bering Sea. 



Geogr. Distr. Bering and Copper Islands, Bering Sea. 



Family II. Trichechidse. Manatees. 



Genus 14. Trichechus. 



Trichechus Linn., Syst. Nat., i, 1758, p. 34. Type Trichechus 

 manatus Linnaeus. 

 Manatus Briinn., Zool. Fund., 1772, pp. 34, 38, 39. Scopoli, 

 Intr. Hist. Nat., 1777, p. 490. Storr, Prodr. Meth. Mamm., 

 1780, p. 41. 



27. Trichechus manatus Linnaeus. 



Trichechus manatus Linn., Syst. Nat., i, 1758, p. 34; i, 1766, p. 49. 



Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. Pub., iv, 



Pt. I, 1904, p. 37, fig. XIV, pis. IV, V. Zool. Ser. 

 Manatus latirostris Harl., Joum. Acad. Nat. Scien. Phil., 1824, 



p. III. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 



p. 6, pi. III. Zool. Ser. 

 Manatus australis Tilesius, Jahrb. Naturg., i, 1802, p. 23. 

 Manatus americanus Desm., Diet. Hist. Nat., 1817, p. 262, pi. 96. 



(Part.) 

 Manatus fluviatilis Wagn., Schreb. Saugth., Suppl., 1846, pi. 379. 

 Manatee. Vacca de Agua in Guatemala. 

 Type locality. East coast of Florida. 

 Geogr. Distr. Florida coast to Yucatan, Mexico. 



