. The Cambridge natural history. Zoology. AARD VARK I 87 This group contains but one family, the Orycteropodidae, of -which there is but a single genus. The Aard Yark (earth-pig), genus Orycterojyus, is characterised l)y its heavy build, the body being covered by rather coarse and not very abundant hair; the snout is long and pig-like, with round nostrils at its end; the ears are long, erect, and pointed; the tail is very thick at first, so that it has been aptly described as " a tapering of the body to a ; The fore-limbs are four-toed, the hind Fi(!. 107.—Aard Ynrl
. The Cambridge natural history. Zoology. AARD VARK I 87 This group contains but one family, the Orycteropodidae, of -which there is but a single genus. The Aard Yark (earth-pig), genus Orycterojyus, is characterised l)y its heavy build, the body being covered by rather coarse and not very abundant hair; the snout is long and pig-like, with round nostrils at its end; the ears are long, erect, and pointed; the tail is very thick at first, so that it has been aptly described as " a tapering of the body to a ; The fore-limbs are four-toed, the hind Fi(!. 107.—Aard Ynrlc. or f'ajie Anteater. Ori/cferojms ccqjensis. Xy^. In the skull there is a complete though slender zygoma; the premaxillaries, though small, are not so rudimentary as in the American Edentates. The annular tympanic is not ankylosed to the surrounding bones, a character found in other low mammals. Contrary to what is found in Manis, Orycteropas has a huge lachrymal. There are thirteen dorsal and seven lumbar vertebrae. The clavicle is well developed. Orycteroims is peculiar among Edentates in that the ischia do not unite with the vertebral column. The femur has a third trochanter. As mentioned on p. 1G2, the Aard Yark is diphyodont like normal mammals. The permanent teeth consist of five molars and pre- molars on each side of each jaw; the first tw'o of these are pre- molars, and are simpler in their form than the succeeding two teeth, which are partly divided by a median furrow into two halves. These teeth are also ])eculiar in that they consist entirely of vaso-dentine. They have been compared in minute structure to those of the Eay Myliohates. According to Mr. Oldfield. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harmer, S. F. (Sidney Frederic), Sir, 1862-; Shipley, A. E. (Arthur Everett), Sir, 1861
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Keywords: ., bookauthorsh, bookcentury1800, bookdecade1890, booksubjectzoology
