PLATE III. 



PAGE. 



VATICINODUS VETUSTUS, St. J. and \V 82 



Fig. 1 a. Maxillary posterior tooth left rainus, seen from above, the mutilated 

 anterior border and posterior extremity restored in outline; 1 b, do., 

 inner margin; 1 c, do., from the outer inrolled margin; 1 d, do., pro- 

 file from posterior extremity. Kiuderhook; DesMoines county, 

 Iowa. O. St. John. 



YATICINODUS DISCKEPANS, St. J. and W 83 



Fig. 2 a. Maxillary posterior tooth, left ramus, from above, outline restored; 2 I, 

 do., transverse profile from inner margin; 2 c, do., fore-shortened 

 view from antero-lateral border. Buffington creek. Mr. Springer. 



Fig. 3 a, l>, c. Similar views of the same form, right ramus. Augusta. O. St. John. 



