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ZOOLOGY. 



pre-molars and three tme molars ; while the rami of the 

 mandible are coossified ; for these reasons it was placed 

 by F. Cuvier between the orders Carnivora and Primates 

 {Cope). It is allied to the raccoon, is called the Mncajou, 

 and lives in northern South America. 



The bears have a thick, clumsy body, with a rudimentary 

 iail, and the teeth are broad and tuberculated, so that they 

 can lire indifEerently on fish, insects, or berries. Our Xorth 

 American species are the polar bear ( Ursus maritimus 

 Linn.) and Ursus arctos Linn., with its Tarieties of brown. 



Fig. 535. — Skeleton of the Polar Bear, showing the plantigrade feet. 51, acapnia ; 

 5-3, hamems; .M, radins; 55, nlna; 62, iliam ; 63, iscblam; ^ femur; 66, tibia; 67, 

 fibnla ; d, calcareom ; C, cervical vertebne. — After OweiL 



cinnamon and grizzly bears ; and the tme black bear, Ursus 

 Ainericanus Pallas. 



The bears are succeeded by the Mustelidce, or the otter, 

 ^kunk, badger, wolverene, weasel, mink, ermine, etc., nearly 

 all of which are valuable for their furs. 



The dog family (Canidm) is represented by the fox, wolf, 

 and dog. The gray fox ( Urocyon Tirginianus Erxleben) the 

 common red fox ( Vidpes vulgaris Fleming), with its varie- 

 ties, the cross, silver, and black fox, as well as the wolf 

 {Cnnis lupus Linn.), are valuable for their furs. The wolf 

 is mostly gray northward, becoming "southward more and 



