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Show 874 MR. ST. GEORGE MIVART ON THE [Dec. 6, of the tuberosity of the ischium, close to the origin of the semitendinosus, which is superficial and posterior to it. It is inserted by a long and strong tendon (in common with the peroneal part of the bifurcating tibial adductor) into the antero-peroneal aspect of the head of the tibia. Fig. 17. Deeper muscles of outer aspect of right pelvic limb; the ilio-peroneal cut and reflected. A. Adductor. B. Biceps. Dl. Gluteus primus. D2. Gluteus secundus. D3. Gluteus tertius. E. L. Extensor longus digitorum. F2 & F3. Rectus femoris. F. C Femoro-caudal. F. Dl. Flexor longus digitorum. F. D2. Flexor tertius digitorum. G. Gracilis. G. E. Gastrocnemius externus. I. P. Ilio-peroneal. P. Peroneus. S. Tibial adductor. 8. M. Semimembranosus. V. E. Vastus externus. X. Gluteus maximus. y. Tendon of femoro-caudal. Semitendinosus (figs. 18, 19, 23, & 24, S. T.). This springs, in common with the biceps, close to the tuberosity of the ischium, from the tendinous ilio-ischiatic arch, just behind the origin of the semimembranosus. Crossing beneath the tibial adductor, it is inserted into tbe tibial aspect of the interarticular cartilage, in common with (though below) the smaller (tibial) branch of the bifurcating tibial adductor. This may, perhaps, be the muscle which Professor Rolleston considers to be the gracilis. Biceps (figs. 2, 17, 18, 23, & 24, Bi). This muscle takes origin from the before-mentioned ilio-ischiatic tendinous arch, close opposite to and more or less continuous with the gluteus maximus. Passing downward to the calf of the leg, it is inserted, by a tendon, |