APPENDIX. 219 



Fig. 3. — Lateral (external) view of the same. In these three the joints are separated to 

 show the articulations. 



Fig. 4. — Upper extremities of the ulna and radius, forming the articulating surface for 

 the reception of the humerus. 



Fig. 5. — Posterior view of the hind-leg, also disarticulated to exhibit the articulation. 



Fig. 6. — The patella. 



PLATE XXVI. 



The Baltimore Tooth. — A, The worn surface of the first, or perhaps the second, pair of 

 lobes. B, A portion of another lobe, or of an anterior talon. C, Enamel border of a worn 

 mammillary eminence, forming the trefoil or trifoliated figure, D. E, The bi-lobate talon, and 

 posterior extremity. F, Papillary eminences, with then cusps not worn. G, Papillary eminences, 

 with their cusps worn. H, Clefts between the mammillary eminences intersecting the basal 

 cingulum. L, Small pyramidal buttresses supporting the bases of the mammillary eminences. 



LARGE PLATE. 



References : Pages 7, 11, 16, IS, 20, 29, &c. — This lithograph shows most of the bones 

 of the animal. The number of those deficient in the skeleton, and whose places are supplied, 

 is very small, and I intended to have had them indicated in the engraving ; but, owing to acci- 

 dental circumstances, this was omitted. They are, however, mentioned in the text. 



