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Show 70.] MYOLOGY OF CHAMELEON PARSONII. 875 between the distal ends of the gastrocnemii, into the peroneal aspect of the plantar ossicle. It has the gastrocnemius interims superficial to it, and is itself superficial to the gastrocnemius externus. Fig. 18. Inner side of right pelvic limb. B. Biceps. E. L. Extensor longus digitorum. E1 & E2. Extensores metatar-sorum. E. 0. External oblique. F1 & F2. Rectus femoris. F. D1. Gluteus primus. G. Gracilis. G. E. Gastrocnemius externus. /. Iliacus. S. T. Semitendinosus. T. A. Tibialis anticus. V. I. Vastus internus. The ilio-peroneal (figs. 2, 17, 19, 20, 23, & 24, I. P) arises from the outside of the ilium, just behind and more or less beneath the origin of the third part of the rectus femoris. Passing distad, and greatly expanding, it is inserted outside the leg into the posterior margin of the fibula between the peroneus and the tibialis posticus. It covers in the great sciatic nerve. The iliacus (figs. 4, 18, 19, 21, & 22, I, I\ V, J3 ) is more or less divisible into three parts. The first part takes origin from the inside of the ilium, below the tendon of origin of the internal oblique. The second part extends far back, springing from the inside of the ischium. The third and smallest part arises from just inside the pubis, but only extends a very little on the visceral surface of the pelvis. These three parts join together, and are inserted together into the |