File:Animal Life and the World of Nature; A magazine of Natural History (1902) (14788012773).jpg

Identifier: animallifeworldo119021903lond (find matches)
Title: Animal Life and the World of Nature; A magazine of Natural History
Year: 1902 (1900s)
Authors:
Subjects:
Publisher: London
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

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ype and the simpler digestiveapparatus of the pig. In common, however, with all the other Pecorines, the TragulidcBhave absolutely no incisor teeth in the upper jaw, while in the lower jaw the caninetooth assumes the form of an incisor, and is closely pressed against the real incisorteeth. The readers attention should be drawn particularly to the white spots andstripes of these Chevrotains, which appear to be a very ancient characteristic of themammalia, more ancient perhaps than the black spotting and striping which is somarked a feature of the carnivores, but which, like the white markings, may go backconcurrently to a reptilian origin. The white spotting and striping is exhibited also byprimitive Perissodactyls like the existing Tapir (in its young stage); perhaps also inthe horse, where, however, by a curious extension or exaggeration the white or * The horse, of course, still retains two splints or vestiges of the second and fovirth toes on either side o£ thegreat central digit.
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Photograph bij W. P. Damlo, F.Z.S., Ileucnts Purl: SKULL OF CEPH.VLOPHDS SYLVICULTEIX. Wild Beasts and Their Ways 133 light-coloured markings have left narrow intervals of darker fur that in time havecome to be considered stripes, though the diversification has probably originated bythe exaggeration of the white spots and stripes. These white or light-colouredmarkings again reappear in the juvenile stage of most pigs. They persist oftento old age in the Traguliues, and, as I have already stated, they are markedlypresent in the deer and the musk deer. They may be the origin of the network ofmarkings on the Giraffe; and lastly, they reappear (very slightly) in the more primitivetypes of oxen, and in one group of so-called antelopes—the Tragelaphs (eland, kudu,bushbuck). Early in the history of traguline development arose a tendency in the males todevelop bosses of bone on the forehead with which no doubt they butted their rivalsor foes. Nature is constantly repeating herself, and she

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