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Show 472 DR. J. MURIE ON SAIGA TARTARICA. [June 9, (B) Pelvic arch and hind limb.-In treating of tbe male pelvis it may be as well to mention that the left ischium of the Society's specimen had sustained a fracture, the parts being reunited in a contorted manner. The opposite right pelvic moiety, however, was intact; and from it and the College of Surgeons' skeleton the subjoined description is taken. Pelvis of male adult Saiga, its lower aspect: two-fifths nat. size. L. 6. Last or sixth lumbar vertebra, a. s. sp. Anterior superior spinous process. t. i. Tuberosity of the ischium, e. sp. External spinous process of ischium. The brim is placed at an angle of about 50° to the long axis of the lumbar vertebrae. Its conjugate diameters are 3 inches; no marked inequalities exist, so that its roundish outline is complete. The enlarged diamond-shaped blade of the ilium is deeply biconcave without for the deep gluteal muscles ; and the sacro-iliac synchondrosis occupies rather less than half of the antero-inner convex surface. A remarkably prominent, elongate anterior superior spinous process (a. s. sp) juts outwards ; and the middle of the crest has also a noteworthy tuberosity. The acetabulum is narrow, but deep, the notch large but protected by a thick layer of cartilage. The anterior |