. Catalogue of the mammals of Western Europe (Europe exclusive of Russia) in the collection of the British museum. Mammals. 62 INSECTIVORA are all longer in proportion to their height than in Sorex araneus, and the posterior border is more concave. In size there is a f'radual and regular diminution from first unicuspid to third ; fourth somewhat more abruptly smaller;'"' fifth slightly smaller than fourth when viewed from the side, but with larger crown area due to the presence of a well developed postero-internal crushing surface. This tooth is rela- tively larger and more functional tha
. Catalogue of the mammals of Western Europe (Europe exclusive of Russia) in the collection of the British museum. Mammals. 62 INSECTIVORA are all longer in proportion to their height than in Sorex araneus, and the posterior border is more concave. In size there is a f'radual and regular diminution from first unicuspid to third ; fourth somewhat more abruptly smaller;'"' fifth slightly smaller than fourth when viewed from the side, but with larger crown area due to the presence of a well developed postero-internal crushing surface. This tooth is rela- tively larger and more functional than in Sorex araneus, showing no tendency to become subordinate to paracone of large premolar. Lower unicuspids narrower and more trenchant than in Sorex araneus. Except for this general tendency the second shows no special ^_^^' ^^' . peculiarities of form. The first, how- "'^^teeth.'* X 5"'^''° ever, is strikingly diiferent from the corresponding "tooth in S. araneus. Its general outline when viewed from side is irregularly elliptical, with longest axis parallel to that of mandible, the upper edge with two low, rounded cusps, the anterior of which is about as large as lobes on cutting edge of incisor, the posterior smaller. Upper cheek-teeth not essentially different from those of Sorex araneus, except that hypocones are less developed. Lower cheek-teeth as in the related species. Pigmentation of teeth slightly less extensive than usual in Sorex araneus. Sorex alpinus alpinus Schinz. 1837. Sorex alpinus Schinz, Neue Denkschr. Allgem. Schweiz. Gesellsch. Naturwiss., Neuchatel, i, p. 13 (St. Gothard Pass, Switzerland). 1840. ? Sorex anthiorii Bonaparte, Iconogr. Faun. Ital., i, fasc. 29 (No exact locality, and probably not a European species). 1857. Sorex alpinus Blasius, Saugethiere Deutschlands, p. 126. 1870. ? Sorex intermedius Cornalia, Catal. Descrit. Mamm. Ital., p. 27 (Hills of Brianza, Como, Italv). Part: body ; see Sordelli, Atti Soc. Ital. Sci. Nat. e de
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmammals, bookyear1912
