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PLATE IX. 



Fig. 1. Menodus fproulii, 0. N. & E. horn of right side ; three-eightha natural size ; external view ; a section of 



horn at base. 

 Fig. 2. Menodus americanus, Leidy, horn of left side ; external view ; three-eights natural size ; a base of same 



with adjacent extensions, from below. 

 Fig. 3. Menodus f americanus, head of tibia, proximal view, figured at No. 1, plate xii. 



PLATE X. 



Fig. 1. Menodus, sp. humerus ; two-fifths natural size ; posterior view. 



Fig. 2. Menodus f americanus, Leidy, scaphoid bone ; two-fifths natural size, from front ; a proximal face ; b distal 



face. 

 Fig. 3. Menodus fproulii, 0. N. & E. tibia ; proximal view of head ; two-fifths natural size. From tibia figured at 



No. 2, plate xii. 



PLATE XI. 

 Bones of Menodus, three-eighths natural size- 

 Fig. 1. Menodus f angustigenis, Cope, femur, from front ; rotular face injured; a posterior view; 6 proximal view 



of head. 

 Fig. 2. Menodus, sp. humerus, figured on plate x. ; head, proximal view; a condyles, distal view. 



PLATE XII. 

 Tibise of Menodus, three 'eighths natural size. 

 Fig. 1. Menodus ? americanus, Leidy, front view ; a posterior view ; c distal end. 

 Fig. 2. Menodus ? proutii, 0. N. & E. front view; a posterior view. 

 Fig. 3c. Menodus ? proutii, second individual ; distal extremity. 



Fig. 4. Menodus f angustigenis, Cope, tibia, from front ; b proximal view of the same ; c distal view of the same, 

 another specimen. 



PLATE XIII. 



Bones of the feet of Menodus, three-eighths natural size. 



Fig. 1. Menodus ? angustigenis, Cope, scaphoid, from front ; a proximal side ; b inferior side. 



Fig. 2. Menodus, least species; scaphoid bone, from front ; a proximal view ; b distal view. 



Fig. 3. Menodus fproulii, os magnum from above ; a from front. 



Fig. 4. Menodus ? angustigenis, os magnum from above; a from front. 



Fig. 5. Menodus americanus, Leidy, calcaneum from above ; sustentaculum wanting ; a distal extremity. 



Fig. 6. Menodus ? angustigenis, calcaneum from above ; a distal view. 



Fig. 7. Menodus f americanus, astragalus from above ; a distal view. 



Fig. 8. Menodus angustigenis, astragalus from above; a distal view. 



Fig. 9. Menodus, least species ; astragalus from above ; a distal view. 



PLATE XIV. 



Chiefly teeth of Diplarthra, natural size, except figure 3, which is two-thirds natural size. 



Fig. 1. Anchilherium westonii, Cope, superior molar from below ; external wall restored. 



Fig. 2. Anchitlierium westonii, fragment of lower jaw, with two molar teeth, from above ; a do., external side. 



Fig. 3. Elolherium arctalum, Cope, left ramus of mandible, lacking the anterior extremity, and part of inferior 

 border, internal view ; a dentition, viewed from above. 



Fig. 4. Hyperlragulus transversus, Cope, worn superior molar tooth, from below; a external view. 



Fig. 5. Leptomeryx esulcalus, Cope, superior molar, 5 natural size; a natural size ; external wall of anterior cres- 

 cent restored. 



Fig. 6. Leptomeryx mammifer, Cope, superior molar ; a external view. 



Fig. 7. Leptomeryx mammifer, Cope, portion of mandible, with second and parts of the first and third true molars, 

 from above ; a from external side. Typical specimen. 



Fig. 8. Leptomeryx semicinctus, Cope, superior molar, from above : a from external side. 



Fig. 9. Palxologus turgidus, Cope, left mandibular ramus, external view ; a superior view. 



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