. Catalogue of the mammals of Western Europe (Europe exclusive of Russia) in the collection of the British museum. Mammals. PIPISTRELLUS •217. other European species. Mesopterygoid space slightly longer than wide. Mandible with coronoid process distinctly higher than articular process, so that upper edge of posterior portion is oblique and not parallel with alveolar line. Teeth.—Inner upper incisor essentially as in Pipistrellus inpistrellus except that secondary cusp is reduced to a minute, sometimes obsolete, projection from cingulum at posterior base of shaft; outer incisor very small, less
. Catalogue of the mammals of Western Europe (Europe exclusive of Russia) in the collection of the British museum. Mammals. PIPISTRELLUS •217. other European species. Mesopterygoid space slightly longer than wide. Mandible with coronoid process distinctly higher than articular process, so that upper edge of posterior portion is oblique and not parallel with alveolar line. Teeth.—Inner upper incisor essentially as in Pipistrellus inpistrellus except that secondary cusp is reduced to a minute, sometimes obsolete, projection from cingulum at posterior base of shaft; outer incisor very small, less than half as high as inner, its apex about on level with highest point of cingulum of larger tooth, its crown area about two-thirds that of latter, its structure essentially as in P. ])ij)istrellus, though with very small secondary cusp; small tooth situated directly exterior to large, so that a line perpendicular to main axis of skull would pass through middle of all four incisors; lower incisors essentially as in P. pipistrellus, though relatively larger and more strongly imbricated. Canines both above and below intermediate in form between those of P. pipistrellus and P. nathusii. Anterior .^ \i uu ijjj G>f-i upper premolar crowded inward from tooth- row and closely wedged between canine and large premolar which are nearly or quite in Pij^Mi^kuMU. contact; the small tooth is usually though not Anterior teeth x 5. always invisible from outer side, its cusp is very low, nearly terete, its crown area about equal to that of outer incisor ; large premolar with no special peculiarities. Lower premolars as in the related species, but disproportion in size more marked, the crown area of first a little more than half that of second. Molars both above and below essentially as in P. pipistrelhis and P. nathusii, but somewhat more robust. Measurements.—Two adult males from near Genoa, Italy : head and body, 43 and 46 ; tail, 37'4 and 38 ; tibia, 12-4 and 13 ; foot, 6 and 6 ; f
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmammals, bookyear1912
