G. GENERAL NATURAL HISTORY AND ZOOLOGY 285 



Africa, but was widely distributed all over Europe during 

 the diluvial period, and in still later times. Subfossil remains 

 of this species have been found in the neighborhood of Rome, 

 in Southern Russia, Upper Austria, Baden, Abbeville, and 

 Olmutz. The same writer divides the wild dogs into two 

 groups : first, the jackal of the Mediterranean fauna, which 

 he considers the wild ancestor of the domestic dog of the 

 stone age ; second, the prairie wolf of North America, the 

 wolf-dog of North Africa, the Pyrenean wolf, the prairie 

 wolves of Eastern Europe, the dingo, the Senegal dog, and 

 perhaps the wolf of Japan, all of which, in his opinion, are 

 varieties of one and the same form, which he calls Cajiis 

 lycoides^ and which first appeared in a domestic state in the 

 bronze age. 13 A^ November 13, 1872, 434. 



NEW EOCENE MAMMAL. 



Professor Cope announces a new genus of eocene mammalia 

 from Southern Wyoming, under the name of Synoplotheriiim. 

 This, which was about the size of a black bear, probably be- 

 longs to the family of proboscidians, or else constitutes a 

 connecting link of the perissodactyla. 5Z>, A^ovem^er, 1872, 

 595. 



NEW FOSSIL CAENIVOEA. 



Some time ago Professor Leidy described a genus of ex- 

 tinct animals from Wyoming, which appeared to be distantly 

 related to the tapirs, in which two large, long teeth projected 

 from the extremity of the lower jaw in front, in contact, and 

 in appearance much like the cutting teeth of rodents (the 

 beaver, for example). This he cs^ledi Aiichippodus^ and two 

 species were noted. More recently Professor Cope discovered 

 a genus of carnivora which presents nearly the same struct- 

 ure of lower jaw, the two terminal parallel teeth being very 

 large and strong. They are evidently canine teeth, which 

 have come together by the omission of all, or nearly all, the 

 intervening teeth (incisors). They work against three teeth 

 on each side of the upper jaw, at the end against incisors, 

 and sideways against a huge tiger-like canine. The molar 

 teeth are all flesh teeth, to the number of six on each side 

 (the lion and tiger have only one) ; but these are not very 



