PLATE CCXXI 



Left Tibia of the Type op Brontops robustus Marsh 



Plate prepared under the direction of Professor Marsh. One-fourth natural size. (See p. 669) 



1, Anterior view; la, section of shaft at break near middle; 2, medial or inner view; 3, posterior view; 4, lateral or outer view, 

 showing fibular side; 5, proximal end; 6, distal end. a, Facet for articulation with astragalus; e, facet for articulation with 

 outer condyle of femur; /, /', facets for articulation with fibula; i, facet for articulation with inner condyle; p, procnemial 

 ridge; s, spine of tibia. The principal ligamentous and muscular attachments of the tibia are given on page 720. 



