PLATE CCV 



Left Humerus of the Type of Brontops robustus Marsh 



Plate prepared under the direction of Professor Marsh. One-fourth natural size. (See p. 668) 



1, Anterior view; 2, medial or inner view; 3, posterior view; 3a, section of shaft at narrowest point; 4, lateral or outer view; 

 5, proximal end; 6, distal end. a, Distal articular surface; d, deltoid ridge; e, external condyle; h, head of humerus; 

 i, internal condj'le; o, anconeal fossa; s, supinator ridge; t, great tuberosity; t' , small tuberosity. The principal muscle 

 attachments of the humerus are given on page 715. 



