牛の寛骨における坐骨間骨について

抄録

The author found an independent bone at the posterior portion of the pelvic symphysis in the coxae of cattle (cow) .
In the literature opinions on this independent bone differs more or less among some previous authors. In ruminants and non-ruminants the epiphysis on the inner border of the ischium has been investigated by A. CHAUVEAU & S. ARLOING (1873), WEYHE (1875) and S. SISSON & J.D. GROSSMAN (1959), and described by them as the interischial bone. R.N. WEGNER (1963) described the interpubal bone in coxae of both Antilocapra americana ORD 1815 and Tragulus javanicus OSBECK 1765, however, it seems to me the interpubal bone should be regarded as the interischial bone, considered from old osteological custom.
The author recognized clearly that an independent bone is situated on the coxae of cattle between the inner ischial borders by the observation of its cleavage lines (See Fig. 1) . Therefore, the author thinks that it is an interischial bone. The detailed features of the interischial bone are shown in Fig. 2.