518 



Reviews — Prof. Edward D. Cope- 



Oligobunis crassivultus differs from Icticyon venaticus of Brazil, in 

 the greater development of the inner part of the upper tubercular 

 molar, while the tubercular molar of the lower jaw is much less 

 developed. Hycenocyon differs from Oligobunis in wanting the first 

 premolar and the second molar teeth in both jaws. Buncelurus is 

 allied to Putorius and perhaps to Gulo, but is distinguished by the 

 form of its tubercular tooth, which is a cutting tooth without cusps 

 or tubercles. 



In the higher genera of the family Nimravida?, the dental characters 

 are like those of the Felidse, but among the lower genera the number 

 of molar teeth increases anteriorly in the upper jaw, and at both ends 

 of the series in the lower jaw ; though the number of true molars 

 never exceeds one above and two below. Eight genera are at present 

 grouped in this tribe ; and they show modifications in the reduced 

 number of molars, the enlarged size of the upper canines, smaller 

 size of the lower canine, conical form of the crowns of the incisors, 

 addition of a cutting lobe to the anterior base of the upper sectorial 

 tooth, the obliteration of the inner tubercle of the lower sectorial in 

 which the heel is lost, and in the development of cutting lobes on 

 the hinder borders of the larger premolar teeth. 



Nimravus gomphodus. 

 Some of these genera may belong to the CryptoproctidEe ; but 

 until the number of digits is known in all the forms, this point 

 cannot be determined. Archcelurus debilis was an animal having 

 much the aspect of existing Cats, but with more slender feet, narrower 

 head, and greater convexity of the region between and behind the 

 eyes. The prehensile organs of the feet, and teeth, were less robust. 

 It was about the size of the American Panther. There is no cutting 

 edge to the front of the canine tooth, and the posterior edge is not 

 serrated. The sectorial teeth have a long narrow form, the superior 



