EDENTATA OF THE SANTA CRUZ BEDS. 3 



Finally, I must make grateful and appreciative mention of the help 

 rendered by my assistant, Dr. Marcus S. Farr, by Mr. Jacob Geismar, 

 preparator, and by Mr. F. van Iterson, artist, who have labored with un- 

 wearied zeal and without whose assistance the work could hardly have 

 been undertaken. 



EDENTATA OF THE SANTA CRUZ BEDS. 



Following the suggestion of Oldfield Thomas ('87, p. 459) the Edentata 

 will be here regarded as forming a separate subclass of the mammals, and 

 in what follows no account will be taken of the so-called edentates of the 

 Old World, the position of which is altogether uncertain. Discussion of 

 the systematic position of the subclass, as a whole, and of the mutual 

 relationships of its various subdivisions will be deferred until a detailed 

 account of the Santa Cruz representatives of the group shall have been 

 laid before the reader. It is my purpose in the present section merely to 

 consider the more salient characteristics of the fossils. The following 

 table gives the scheme of classification here adopted. 



I. DASYPODA. 



1 . Tatuidce. 



2. Dasypodidce. 



3. Chlamydophoridce. 



4. Peltephilidcz. 



II. GLYPTODONTIA. 



1. Sclerocalyptidce. 



2. Glyptodontidce. 



3. Dcedicuridce. 



III. GRAVIGRADA. 



1. Megalony chides. 



2. Megatheriidce. 



3. Mylodontidce. 



IV. TARDIGRADA. 



1. Bradypodidce. 



2. Cholccpidce. 



V. VERMILINGUIA. 



i. Myrmecophagidce. 



