G. 1. Adams — Extinct Fetiche. 



145 



Aet. XVIII. — On the Extinct Fetiche; by Geo. I. Adams. 



Since publishing my studies on the Extinct Felidee of 

 North Ameficfc* I have had the opportunity of seeing many 

 of the European and Indian specimens, and I now wish to pub- 

 lish some further corrections in the synonomy of the group 

 and emphasize the distinctions which exist among certain 

 genera. I am indebted to Dr. Gaudry of the Jardin des 

 Plantes and to Dr. Woodward of the British Museum for 

 privileges of study. 



Structure of the Canines of the Felidce. 

 The structure of the canines of the Machserodonts with their 

 posterior and anterior denticulate borders is well known, but 

 some errors have arisen from the failure to recognize that the 

 same elements are present in the canines of all the Felidse. 

 An examination of the unworn canines of the Iron, for example, 

 will show that there are two roughened ridges on the interior 

 face of the tooth which correspond to the denticulate lines 

 found in Machcerodus. In Pseudcehcrus the canines have a 

 structure intermediate between those of Felis and Machcerodus. 

 They are described as being rounded anteriorly and having the 

 posterior border sharp and denticulate. The anterior denticu- 

 late ridge is however present, but is situated on the inner face 

 of the tooth except near the point where it forms the anterior 

 border. The accompanying outlines and cross-sections will 

 give an idea of the structure found in each. 



Fig. 1. Felis leo x £. 



Fig. 2. Pseudcelurus x \. 

 This Journal, June, 1896. 



Fig. 3. Machcerodus x $. 



