Digitigrades: Cat, Dog ([Fig. 34], p. 52).—The external iliac fossa, which looks outwards, is deep; the iliac crest is convex anteriorly, the convexity is continued from one iliac spine to the other.
Fig. 49.—Pelvis of the Dog, seen from Above.
1, Iliac crest; 2, external iliac fossa; 3, sacrum; AA′, bi-iliac diameter; BB′, bi-ischial diameter.
In the dog, the distance which separates the anterior iliac spines is less than that which separates the ischia ([Fig. 49]). On a skeleton which we measured, the transverse diameter, the distance from the anterior iliac spine of one side to that of the opposite side, was 8 centimetres, whilst the distance which separated the ischia was 105 millimetres; on another skeleton, the first measurement was 127 metres, and the second was 146 millimetres. It seems to us unnecessary to multiply examples.
Fig. 50.—Pelvis of a Felide (Lion), viewed from Above.
1, Iliac crest; 2, external iliac fossa; 3, sacrum; AA′, bi-iliac diameter; BB′, bi-ischial diameter.