218 CHORDATA. 



Order 10. Carnivora (Ferae), beasts of prey. Pentadactyle clawed 



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Mammals, with complete dentition. Incisors generally , canines 



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strong. Clavicles absent or rudimentary. Placenta zonary. 



(a) Fissipedia; terrestrial forms with well-developed claws, and ex- 



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tremities seldom webbed. Incisors , canines long and pointed, prse- 



molars (denies spurii) pointed, molars mostly small and irregular ; the 

 last upper praemolars and first lower molars are large rending teeth (car- 



nassial or sectorial). Ursus, p.m. _ m. . Mustela martes, martin, 

 p.m. L m. 1 . Viverra, p.m. 1 m. A . Canis, p.m. 1 m. JL . 

 Hyaena, p.m. m. . Felis, p.m. m. . 



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(b) Pinnipedia; aquatic forms with rudimentary claws and webbed 

 extremities; the hind-limbs united with the tail by a fold of skin. 

 Grinding teeth all similar, and never with more than two fangs. Phoca 



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vitulina, common seal, i. ^- c. p.m. + m. . Otaria, sea lion or 

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eared seal. Trichechus rosmarus, walrus. 



