238 
CORYL’IIODON. 
The atlas is stout, and the vertebral canal is straight and horizontal. 
The superior base of the transverse process extends almost the entire length 
of the atlas, while the inferior base is shortened in front. Another cervical 
vertebra'has the section of the centrum a transverse oval; its posterior 
articular face is concave, and is oblique to the horizontal axis. 
The ulna is massive posteriorly, with a thick obliquel 5 ^-truncated 
olecranon, which is vertical proximally and transverse at the end, but not 
so much expanded as in Eohasileus. The shaft is obliquely crossed by a 
flat plane, that of the radius, which thus articulates with the carpus along¬ 
side of and not behind it. 
The scaijula is thickened on its posterior edge, and at its produced 
and shortly truncate apex. The anterior margin just below the apex is 
notched, and two large nutritive foramina j^ierce the plate just behind 
the base of the spine, one opposite its proximal end, the other an inch 
higher up. The terminal part of the scapula is strongly rugose. 
The head of the humerus is large, and the greater tuberosity well 
developed; it is injured, and the lesser tuberosity is broken off The humeral 
crest is stout and twisted just at the distal end; below it, the section of the 
shaft is triangular. The distal end of the humerus has a massive, truncate, 
epicondyle, which is separated from the condyle by a rotular keel. The 
opposite end of the condyles is not bounded by a keel, nor is the surface 
anywhere angulate. The measurements indicate the chai’acters of the 
carpals, which nearly resemble those of other species. The third and fourth 
metacarpals preserved are as stout as those described under C. molestus, but 
are shorter. They are dilated proximally, and deeply impressed by the 
ligamentous fossse. The carina of the distal articular end is obsolete. 
The head of the femur exhibits a deep fossa ligamenti teris; the shaft is 
flattened, and the third trochanter very low. The patella is remarkably 
•elongate, the lower end being produced an inch beyond the articular faces, 
and there obliquely truncated. The inferior half of the bone is narrower 
and thinner than the superior half Of the femoral surfaces, the interior is 
nearly twice as long as the external, which only covers the proximal two- 
lifths the length of the inner face, although it is tlie wider. The distal end 
of the tibia is massive, and exhibits the usual flat astragalar fme. Tlie 
