2 A Remarkable Ground Sloth 



covering in which grow scattered cacti and other desert plants. Near the center lies a funnel- 

 shaped pit, probably the result of the last activity of the volcano. A general view of the crater 

 from without is shown in PI. I, A. 



• o 



i c 







Las Crac«s 



TEXAS 



NEW MEXICO 



Paso 



MEXICO 



° * * * * |0 



M= 



Miles 



=£g= 



=£> 



Fig. i. Map to show the location of Aden Crater. 



General features traced from the topographic map of New Mexico, U.S. Geological 

 Survey, 1925. Approximate position of sloth pit is on eastern rim of crater. 



After Longwett. 



