120 
CEEODONTA. 
The centra of the liimbars are depressed, the posterior much larger, 
and relatively longer than the dorsals ; their sides are concave so as to con¬ 
tract the middle line below. The caudal vertebrae are elongate, and 
present the usual two inferior longitudinal angles. Their combined lengths 
are 0“.480, or nineteen inches, and many are lost. 
Measurements of the vertehrce. 
M. 
Autcro-posterior length of the base of the transverse process of the atlas. 0. 016 
Vertical diameter of the facet for axis of the same. 0. 014 
Length of the centrum of a dorsal..... 0. 018 
Vertical diameter of the same. 0. 012 
Transverse diameter of the same... 0. 017 
Elevation of the neural arch... 0. 010 
Length of the basis of the neural spine... 0. 010 
Length of the centrum of a lumbar. 0. 032 
Vertical diameter of the same.. 0. 013 
Transverse diameter of the same. . 0. 020 
Length of a median caudal.... 0. 027 
Diameter of the centrum of the same... . 0.012 
Length of a distal caudal.... 0.031 
Diameter of the centrum of the same. . 0. 011 
The glenoid cavity of the scapula is a narrow oval, and is j)roduced at 
the base of the coracoid process, which has a narrow basis and unknown 
length. The spine of the scapula rises abruptly a little above the border. 
The outline of the glenoid cavity is like that of TJrsus americanus^ but is 
produced at the coracoid as in Cams nearly resembling that of Didel- 
phjs virginiana. The head of the humerus exhibits subequal diameters; 
the lesser tuberosity projects more in proportion to its width than in the 
Wolf and Cat, and is larger than that of TJrsus arctos; it sends a strong 
rib down along the shaft. The posterior angle of the shaft rises between 
the latter and the posterior support of the head. Fragments of the con¬ 
dyles of the humerus indicate that they had considerable transverse extent, 
resembling in this respect the Bears and carnivorous Marsupials, rather than 
the higher Carnivora. The inner edge of the trochlear face is a raised acute 
border, and within it is a remarkably prominent epicondyle similar in pro¬ 
portions to that of the Opossum, and exceeding that of TJrsus. The exter¬ 
nal part of the trochlea is subcylindric, and the olecranar fossa is large 
and deep. The olecranon is compressed, and longer than deep. 
