PLATE XLIVc^. 



Bones of Bathmodon pachyims from the Big Horn River, two- fifths natural size. Page 549. 



Fig. 1. Left humerus, anterior view ; a, posterior view ; 6, proximal view, restored from the second 



specimen which is figured on Plate XLIV d; c, distal view. 

 Fig. 2. — Radius from below ; a, proximal extremity ; 6, distal view. 

 Fig. !.— Pisiform bone, from above. 



