122 
OEEODONTA. 
of the latter. The postero-internal ligamentous groove is well marked, but 
shallow. 
The calcaneum is wide and depressed anteriorly; posteriorly, it is 
compressed. Not possessing an entire bone, I cannot give its relative 
length. The cuboid facet is not oblique in any sense, and is slightly 
concave. The distal ends of the metapodials are depressed, and have a 
low Carina on the inferior aspect. 
Measurements of pelvis and hind limh. 
M. 
Longitudinal diameter of the acetabulum. 0.024 
Autero-posterior diameter of the ilium at the middle.. 0. OIG 
Transverse diameter of the same. 0. 010 
Antero-posterior diameter of the ischium at the base .. 0.017 
Diameter of the head of the femur (transverse). 0. 018 
Antero posterior diameter of the proximal end of the tibia. 0. 036 
Antero-posterior diameter of the distal end of the tibia. 0.017 
Transverse diameter of the same .... 0. 016 
Antero-posterior diameter of the astragalar face. 0.013 
Vertical diameter of the shaft of the calcaneum.. 0. 013 
Vertical diameter of the cuboid facet of the calcaneum. 0. 010 
This species is smaller than the Ganis lupus and larger than the Red 
Fox, and differently proportioned from either. On comparing the heads 
of the tibia and femur with those of the Wolf, those of the present species 
are observed to be but little smaller, while the head of the humerus is 
much smaller than that of the Wolf. In other words, while the head of the 
humerus is very large as compared with the bones of the hind limb in the 
Wolf, it is very small in the extinct species. The cranium of the S. Mans 
is about the size of that of the Coyote. Hence we can suppose this animal 
as possessing relatively larger hind limbs than in the Dogs and existing 
Carnivora generally. 
The specimens which form the subject of the preceding description 
were all found together by the author, and without intermixture of other 
fossils. 
As the forms of the crowns of the molars of this species are unknown, 
it is not absolutely certain that it is properly referred to Stypolophus^ but 
the number and positions of the teeth justify the reference so far as 
tliey go. 
