An introduction to the osteology of the Mammalia : being the substance of the course of lectures delivered at the Royal college of surgeons of England in 1870 / By William Henry Flower.

  • Flower, William Henry, 1831-1899.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: An introduction to the osteology of the Mammalia : being the substance of the course of lectures delivered at the Royal college of surgeons of England in 1870 / By William Henry Flower. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    Order Marsupialia.—In the American Opossums {Didel- phys), tlie ilium is a very simple, straight, three-sided rod, thicker at its upper than at its acetabular end, each side being nearly equal in extent, hollowed, and sharply defined by prominent straight borders. In the Kangaroo [Macropus, Fig. 108), the three surfaces of the ihum are also well marked and nearly equal; but the whole bone is curved outwards at the upper end. In the Thylacine and Dasyures the ilia are compressed laterally, the ace- tabular and pubic borders meeting above in front, so that the iliac surface is (as in the Garnivora) very nairow, and disappears in the upper half of the bone, the crest being formed by the united edges of the sacral and gluteal surfaces; whereas in the wide, depressed pelvis of the Wombat {Phascoloiiiys), the flattening has taken place in the con- trary direction, and the iliac surface spreads out to form with the gluteal surface behind, a wide, arching, supra- iliac border or crest. The ischia and pubes are always largely developed, and the symphysis is long and generally ossified. In the Kangaroos the pectineal tubercle {pt) of the pubis is strongly developed. Nearly all Marsupials have a pair of elongated, flattened, slightly curved bones (Fig. 108, in), moveably articulated by one extremity to the anterior edge of the pubis, near the Fu;.108.—Ventral surface of innominate bone of Kangaroo {Macrfpus iiiajor), J. si supra- iliac border ; ss sacral surface ; is iliac sur- face ; a/> acetabular bor- der ; />l! pubic border of ilium ; />t pectineal tu- bercle : ii acetabulum ; tiij thyroid foramen ; ti tuberosity of ischium ; -f symphysis ; tn mar- supial bone.