176 KANSAS UNIVERSITY QUARTERLY. 



^^^^^^^ thinner. Beginning on the anterior (?) mar- 



'^'^'- < ' r mj^^^^\ ^'" near the middle of the bone there is a 



'^^^ '^''; ^^M\ pionounced roughened ridge which winds 



to the baclc and terminates near the 



distal extremity. On the inner side of 



.,^, ^ the distal third fourth of the bone is the 



\ nA^ flattened oval articular surface for the 



\\ ■ X ^xj tibid, looking upward and inward. Below 



wmi tiii>, toward the front of the bone is a 



smaller, rounded, flattened articulate 



surface, looking inward and slightly 



.■ lyaa downwards, for articulation with the 



P^ >-^l astiagulus; back of this surface is a large 



,V^ ' .-M lounded, roughened, depressed surface 



«A/ '- v^s^^/ ^°'" ^'^^ attachment of ligaments. 



K'V'^ ^^i^L l^or J/, harlani, Leidy gives the total 



length of the tibia as 233 millimeters, 



K '' "v^^P^^^^ ''^"*' \\\d.X. of the fibular border as 183 



mdlimeters. The length of the present 



bone from the top to the lower end of the 



di-^tal tibial articulation is 210 mm., 



which is rather large for the length 



'^ which he gives. His figures for the 



nituraisi/e i.\teiiKii \ lew proximal tiDiai ariicuiaiion, 04 anu ^,4 



mm , are not dispiopoi tionate. Possibly it representsa different 



species, though hardly a different genus. Below are given the chief 



measurements of the Kansas specimen. 



Length 290 m.m. 



(ireatest (iiameter proximally 117 



Length of tibial articular surface 78 



Width of same 32 



Antero-posterior diameter of shaft 50 



Thickness same place 35 



Greatest width distally 80 



Greatest thickness at lower end of tibial articulation 65 

 Greater diameter of astragular articular surface. . . 44 

 Lesser diameter same surface 33 



