36 TRICHECHUS. 
is found chiefly in the rivers. Three species of Dugong have been 
recognized: H. tabernacul1, from the Red Sea, H. dugong, from the 
Indian Seas, and H. australis, from Australia. In disposition these 
animals are gentle and inoffensive, feeding on water plants and 
grasses, and formerly, before their numbers were so greatly reduced 
by man, were met with in herds composed of various families, and 
in the case of Steller’s Sea-Cow the herds were of great size. 
Fam. l. Trichechidz. Manatees. 
13. *Tricheechus. 
Trichechus Linn., Syst. Nat., 1, 1758, p. 34. Type Trichechus 
manatus Linneus. 
Manatus Brunn., Zodl. Fund., 1772, pp. 34, 38, 39; Id. Scopoli, 
-Intr. Hist. Nat., 1777, p. 490; Id. Storr, Prodr., Meth. Mamm., 
G7 OO Oe Ale 
etl’, 
a 
Seat 6 “ 
si ee 3 — 
. Z iS 
daha ec 
a Swe 
1% : = or Pie, . 
pet ~g . £ — & 
— ew at 
ee ea 
Fig. XIV. TRICHECHUS MANATUS. MANATEE. 
* If the tenth edition, 1758, of Linn. Syst. Nat., is taken as a starting point 
for nomenclature then the generic term for the Manatee would be TRICHECHUS, 
and for the walrus, Op0B&Nus (OpONTOB4NUs), Briss.,1760. Should Brisson’s 
name be rejected, as it probably ought to be, then Rosmarus, Scopoli, 1777, 
would be the proper name for the Walrus. But if the twelfth edition is the 
starting point, then TricHEcHUus stands for the Walrus and Manartus for the 
Manatees. 
