ARTIODACTYLA. 
337 
does not penetrate in the Llama, while it does in the Procamelus. The supe¬ 
rior distal ligamentous groove is exterior in the Llama, nearly median in 
P. occidentalis. The cannon-bone is similar, but more slender. The carpal 
bones, although less robust, nearly resemble those of the Llama, but the 
magnum and unciform facets of the lunar are more nearly equal than in 
that species. The pisiform is large and expanded distally. Its cuneiform 
and radial facets are equal. The phalanges only differ from those of the 
Llama in the greater prominence of the proximal ligamentous insertions and 
the rather more slender shafts. 
Measurements. 
Long diameter of the proximal end of the scapula .. 
Long diameter of the neck of the scapula . 
Long diameter of the glenoid cavity of the scapula.. 
Short diameter of the same..... 
Length of the humerus... 
Diameter of the proximal end | . 
( short. 
Long diameter of the head. . 
Projection of the greater tuberosity beyond the head 
Long diameter of the shaft at the middle.. 
Transverse diameter of the distal end. 
Antero-posterior diameter of the same. 
Length of the ulno-radius on the chord. 
Depth at the head of the radius... 
Depth at the middle of the shaft. 
Width at the middle of the humeral cotylus. 
Width at the middle of the shaft.. 
Width of the distal end of the radius... 
Depth of the same ..... 
Length of the cannon-bone .. 
Proximal diameter j . 
Transverse distal diameter. 
Length of the carpal series. 
Length of the lunar.. 
Width of the same.. 
Depth of the same... . 
Length of the pisiform .. 
Vertical width of the same... 
Length of the trapezoides... .. 
Width of the same.. 
22 a B 
M. 
0. 
054 
0 . 
031 
0 . 
035 
0. 
029 
0 . 
250 
0. 
073 
0 . 
050 
0. 
040 
0 . 
034 
0. 
030 
0 . 
040 
0. 
040 
0. 
350 
0 . 
040 
0. 
015 
0. 
012 
0. 
023 
0. 
042 
0. 
027 
0. 
226 
0. 
023 
0. 
032 
0. 
041 
0. 
025 
0. 
018 
0. 
013 
0. 
022 
0. 
025 
0. 
019 
0. 
012 
0. 
012 
