Fig. 1. Chlamytherium humboldtii, left jaw, interior view. A tracing taken from 

 Lund's original illustration. One-half natural size. 



""~ Fig. 2. Chlamytherium. septentrionalis. Two teeth from the right lower jaw. At the 

 left, the third tooth from the back of the jaw, presumably the seventh from the front ; the 

 grinding surface of the tooth measures 22 by 6 mm . At the center, the fourth tooth from 

 the back, presumably the sixth from the front : the grinding surface of the tooth measures 

 23 by 6 mm . At the right, median section through the fourth tooth from the back of the jaw, 

 showing, by diagrammatic section, the cavity at the base of the tooth. All from specimen 

 No. 1722, Fla. Geol. Survey. Natural size. From Vero, Fla. 



Fig. 3. Chlamytherium septentrionalis. Exterior view of the right jaw, same specimen 

 as fig. 2. Approximately one-half natural size. 



