. Catalogue of the mammals of western Europe (Europe exclusive of Russia) in the collection of the British Museum. 54 INSECTIVORA. times almost whitish, the line of demarcation along sides usually evident though not very conspicuous. Feet pale wood-brown with a silvery gloss or suffused with drab, sometimes noticeably lighter than back. Tail concolor with back above, not so dark below. SlcuU.âApart from its conspicuously smaller size (condj'lo- basal length, 14'8 to 16 mm. instead of 17 "8 to 20 mm.) the skull differs notably from that of Sorex araneus and S. nlpinus in the narrower, more
. Catalogue of the mammals of western Europe (Europe exclusive of Russia) in the collection of the British Museum. 54 INSECTIVORA. times almost whitish, the line of demarcation along sides usually evident though not very conspicuous. Feet pale wood-brown with a silvery gloss or suffused with drab, sometimes noticeably lighter than back. Tail concolor with back above, not so dark below. SlcuU.âApart from its conspicuously smaller size (condj'lo- basal length, 14'8 to 16 mm. instead of 17 "8 to 20 mm.) the skull differs notably from that of Sorex araneus and S. nlpinus in the narrower, more elongate brain-case, the outline of which when viewed from above is distinctl)' oval instead of sub-circular. Antero-external jwrtion of border flattened, though less notice- abh' than in Sorex araneus. Owing to its different form the brain-case is less abruptly Fio. 10. marked off" from interorbital region than in Sorex minutus. *^^® other European species. Depth of brain-case Nat. size. usually less relatively to breadth than in S. araneus. Lachrymal foramen opening over posterior half of first molar. Teeth.âAside from their very much smaller size (upper tooth-row 6 to 7 mm. instead of 8 to 9-6 mm.) the teeth of Sorex minutits differ in numerous details of form from those of S. araneus. Anterior upper incisor with basal lobe nearly as high as anterior cusp, so that the two points of the tooth are essentially in line with the tips of the first three unicuspids. AVhen viewed from below the posterior lobe appears, howe\er, distinctly smaller than anterior cusp, while from the side its outline is conspicuously higher and narrower than that of first unicuspid. Anterior lower incisor with first lobe on cutting edge as well defined from anterior point of tooth as from second lobe, and lengths of bases of all three lobes approximately equal. Upper unicuspids not essentially different in form from those of Sorex araneus, but crowns perceptibly longer than wide and less abru
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1912
