. Catalogue of the mammals of western Europe (Europe exclusive of Russia) in the collection of the British Museum. SPALAX '^O^ border narrowly rounded ; inner and outer boi'ders about equal; enamel extending slightly on inner and outer sides of tooth, its surface finely rugose with minute longitudinal wrinkles, and light orange in colour. Lower incisor so large that the mandible has the appearance of a mere sheath to the tooth, its root projecting between articular and angular processes as a conspicuous sub- terete capsule, larger and more noticeable than the processes themselves; length of ca
. Catalogue of the mammals of western Europe (Europe exclusive of Russia) in the collection of the British Museum. SPALAX '^O^ border narrowly rounded ; inner and outer boi'ders about equal; enamel extending slightly on inner and outer sides of tooth, its surface finely rugose with minute longitudinal wrinkles, and light orange in colour. Lower incisor so large that the mandible has the appearance of a mere sheath to the tooth, its root projecting between articular and angular processes as a conspicuous sub- terete capsule, larger and more noticeable than the processes themselves; length of capsule increasing with age, scarcely or not attaining level of condyles in individuals whose molars are in the early stages of wear, though surpassing this level in. Spalax (lolbrogeie. Cheek-teeth showing enamel pattern at various stages of wear. I'pper row, maxillary teeth ; lower row, mandibular teeth (semi-diagrammatic), x 5. older animals; section of shaft much as in upper tooth, but antero-posterior diameter relatively greater ; surface of enamel less evidently rugose, and colour whitish or slightly tinged with yellow. Molars with high, sub-terete crowns and short roots, of which there are three in each of the maxillary teeth, the inner root tending to divide longitvidinally into two, and two in each of the mandibular teeth, each root tending to divide into two; size of teeth decreasing from first to third, the crown area of third when unworn about one-half that of first, when worn relatively larger; enamel jiattern of m^ and in'^ consisting of two backwardly curving re-entrant folds on outer side and a single. 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 British Museum (Natural History). Department of Zoology. [Mammals]; Miller, Gerrit Smith. London : BMNH
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1912
