128 
CREODONTA. 
The greater part of the ilimn and adjacent portion of the ischium are pre¬ 
served. Tlie former is more completely represented than that of any other 
specimen obtained. It shows that the anterior exterior ridge of the ilium 
maintains its distinctness from the anterior interior ridge (from the pubis), 
and does not fall into the same plane with it at the iliac crest as in placental 
mammals generally, but forms a continuous ridge dividing the external face 
of the ilium into two planes. These planes are not so equal as in the kan¬ 
garoo and the opossum, the anterior being the narrower. The external 
angular ridge is also quite obtuse, the whole form being intermediate in 
character between the Marsupials and Placentals. The anterior inferior 
(“ spine ” or) tuberosity is well developed, as in other Creodonta. The inci- 
sura acetabidi is deeply excavated in the anterior base of the ischium. 
The femur is an elongate and compressed bone. The great trochanter 
is large, and produced a little beyond the head, and separated from it by a 
deep emargination. The proximal end of the bone is flat, but the posterior 
border is recurved, inclosing a fossa. The head is rather small, and has the 
usual fossa ligamenti teris. The little trochanter is well marked, and con¬ 
tinues into a low linea aspera. The superior part of the outer border of the 
shaft is compressed, and, about as far below the little trochanter as the latter 
is below the head, supports a “third trochanter” in the form of a flattened 
tuberosity, with well-defined borders. The lower part of the shaft has an 
oval section, the long axis in the plane of the proximal end. 
The inferior extremities of both fibulcc are preserved. A section of the 
lower part of the shaft is subtriangular. The distal end is enlarged, and 
obliquely truncated by the astragalar face. It is a little more flattened than 
in DidelphgSj but resembles that genus much more than any Carnivore. 
The peroneal groove is defined by a low, acute tuberosity on its outer side. 
The calcaneum, as I have observed in other species of the Creodonta, is 
large in proportion to the size of the other bones. It is rather flat, and the 
free portion is compressed so obliquely as to be almost depressed. The 
cuboid facet is characterized by being oblique in a transverse sense, while 
in a vertical plane. 
