Peterson: Osteology oi- C)xm)Aciylus. 



461 



Comparative Measurements of Fore Limbs and Feet. 



Mark in front of figures denotes comparative measurement made with other 



individuals of same species. 



O. longipes. C. bactrianus. L. Iniaiiaco- 



Greatest length of scapula 288 mm. 477 mm. 225 mm. 



Greatest width of scapula 190 mm. 235 mm. 155 mm. 



Width of neck of scapula 42 mm. 77 mm. 41mm. 



Width of humeral articulation including coracoid 



process of scapula 65 mm. 106 mm. 55 mm. 



Width of prescapula '6 65 mm. 90 mm. 86 mm. 



Width of postscapula loo mm. 127 mm. 48 mm. 



Greatest height of spine^ 34 mm. 50 mm. 28 mm. 



Greatest length of humerus *3I5 mm. 380 mm. 287 mm. 



Greatest length of radius and ulna *440 mm. 462 mm. 347 mm. 



W^idth of radius at the head 47 mm. 87 mm. 47 mm. 



Width of shaft below the head 35 mm. 71mm. 35 mm. 



Height of carpus *38 mm. 65 mm. 35 mm. 



Width of carpus *50 mm. 91mm. 43 mm. 



Greatest transverse diameter of unciform 25 mm. 36 mm. 21 mm. 



Height of unciform 17 mm. 28 mm. 15 mm. 



•^ntero-posterior diameter of unciform 40 mm. 53 "ii"- 28 mm. 



Antero-posterior diameter of magnum 28 mm. 33 mm. 24 mm. 



Greatest breadth of magnum 22 mm. 40 mm. 20 mm. 



Height of magnum 16 mm. 19 mm. 12 mm. 



Length of metacarpals 345 mm. 330 mm. 230 mm. 



Breadth of distal end of metacarpal 3 23 mm. 45 mm. 23 mm. 



Breadth of distal end of metacarpal 4 23 mm. 45 mm. 23 mm. 



Length of proximal phalanx 66 mm. loo mm. 77 mm. 



Length of median phalanx 31 mm. 65 mm. 27 mm. 



The Pelvis and Hind Limb. 



The Pelvis. — (PL IX, Figs, i and 2.) The general appearance 

 of the pelvis is strikingly different from that of any of the living 

 camels. It is depressed, greatly elongated, and but little expanded, 

 being especially narrow posteriorly. In the camel and the llama the 

 pelvis is short and much expanded and when in position the longer 

 axis is inclined at a higher angle than in O. longipes. In the type 

 (No. 918), the most important parts of the pelvis are preserved and 

 they present the characters which we proceed to describe. The an- 

 tero-superior border of the ilium is not entirely complete but indicates 



'^Measurements taken of type 60 mm. below the suprascapular border where 

 the bone is complete. Measurements of the other genera are taken in a correspond- 

 ing manner. 



