I20 NEW YORK STATE MUSEUM 



FAMILIES OP FERAE 



Limbs so higlily modiBed for swimming as to be prac- 

 tically useless for walking (Pinnipedia; seals 

 and their allies) 

 Hind feet capable of turning forward under the body ; a 



large tusk on each side of upper jaw (walruses). . Eosmaridae, p. 120 

 Hind feet permanently directed backward ; no tusks 



(seals) Phocidae, p. 121 



Limbs normal (Fissipedia; the true carnivores) 

 Hind foot with four toes 

 Claws retractile into a sheath ; muzzle broad and 



short ; teeth not more than 30 (cats) F e 1 i d a e, p. 123 



Claws not retractile; muzzle narrow and long; 



teeth 42 (dogs) Canidae, p. 126 



Hind foot with five toes 

 Entire sole not applied to ground iu walking 



(weasels, otters, martins etc.) Mustelidae, p. 129 



Entire sole applied to ground in walking 

 Size small or medium ; tail well developed ; teeth 



36 to 40 (racoons, etc.) Procyonidae, p. 137 



Size very large, tail rudimentary ; teeth 42 (bears) U r s i d a e, p. 138 



Family Rosmaridae Walruses 



Hind feet capable of turning forward under body; no external ears; a large 

 tusk groxvinr/ downward from each side of uxiper jaw. (Rosmaridae; genus 

 E o 8 m a r u s) 



The family Rosmaridae contains the one genus R o s m a r u s. 



Genus Rosmarus Scopoli 



1777 Eosmarus Scopoli, lutrod. hist. nat. p. 490. Type Trichechus 

 rosmarus Linnaeus. 

 Characters of the family. (Eosmarus; an old name for the walrus first 

 used by Olaus Magnus in the 16th century) 



The genus Rosmarus is represented by two species, one each in 

 the north Atlantic and north Pacific. 



Rosmarus rosmarus (Linnaeus) Atlantic walrus 



1766 Trichechus rosmarus Linnaeus, Systema naturae, ed. 12. 1:49. 



(Norti Atlantic ocean) 

 1880 Od ob aenus rosmarus Allen, History of North American pinnipeds, 



p. 23. 

 1894 Eosmarus rosmarus Ehoads, American naturalist. 28 : 523. 



Characters as above; bristly nose pad narrow. (rosmarus; an old name) 

 The Atlantic walrus, within our limits is now restricted to northern 

 Labrador ; its range formerly extended much farther south. 



