MAMMALIA. BRUTA. Walrus. 117 



ly affert, that all the grinders engraved in the fupplemental vol. ix. of Smellie's tranflation of Buffbn, 

 and all thofe which I have feen in various cabinets, under the name of foffile, from America and 

 Afia, exactly refemble thofe which Mr Pennant attributes to the American fpecies of Elephant, and 

 mufl, from the circumftances already pointed out, have belonged to an animal not in the leaft degree 

 congeneric with the elephant. What this animal is, or has been, I pretend not to determine; but the 

 opinion of the great Linnaeus, that it is the Morfe, or Trichechus Rofmarus, is, I think, extremely 

 probable ; efpecially when it is coniidered that thefe bones have all been found by the fides of rivers, 

 in places where, in all probability, the fea once flowed, though, by its gradual decreafe, they are now 

 become dry land : If not arms of the fea, thefe may have been vaft inland lakes, like thofe dill in 

 America, and other places, which have broken through their lower banks and run out their waters. 

 Many vaft valleys, at great diftances from the fea, ftill bear evident marks of this revolution; and 

 even tradition, in fome places, as in Cafhmire, points out the era. This remarkable circumftance of 

 the converfion of an inland lake into a fertile vale is in no part of the world more evident than in 

 the valley in Virginia, which is bounded at its lower extremity, following the water courfe, by the 

 Rock bridge ; here the waters have dug themfelves a fubterraneous paflage, more than a hundred 

 feet beneath the level of the cataract over which they muft formerly have flowed. — T. 



XII. WALRUS.— 11. TRICHECHUS. 6. 



Has no fore-teeth, when full grown : Has two great tufks, in 

 the upper jaw, which point downwards: Has grinders on 

 each fide in both jaws, which are compofed of furrowed 

 bones. The body is oblong; the lips are doubled; and the 

 hind legs are ftretched backwards *, and, as it were, bound 

 together,, forming a kind of tail fitted for fwimming. 



All the fpecies of this genus inhabit the fea, and feed on fea-weeds, corallines, and tcftaceous ani- 

 mals, or fhell filh, never eating fleih. 



I:. Morfe. — 1. Trichechus Rofmarus. 1. 



The tufks, which extend far out of the mouth from the upper jaw, are diftant from each. 

 Other» Houtt. nat. ii. 7. t. 11. f. 1. Schreber, ii. 262. tab. Ixxix. 



Odobenus. Syft. nat. ed. x. 38. Briff. quad. 48. — Rofmarus. Jonft. pifc. r. 44. Worm, muf.~. 



289. Olear. muf. 38. t. 23. f. 3. Bonnon. muf. 269. f. 27. Gefn. aquat. 211 Sea-horfe, Equus 



marinus, improperly called Hippopotamus. Raj. quad. 191. Ellis, Hudfon's Bay, t. 6. f. 3. — 

 Wallrofs. Martin's Spitlbergen, 78. t. 1. f. B.— Morfe, or Walrus. Sm. Buff. vii. 354. tab. ccl. — 

 Arftic Walrus. Penn..hift. of quad. n. 373. Arft. zool. n. 71. Br. muf. Alhm. muf. Lev. muf.. 



Inhabits* 



* This is termed pedes compedej, or fettered legs, and takes place in aquatic quadrupeds. — T: 



