. The families and genera of bats . Bats; Bats. THE FAMILIES AND GENEEA OF BATS. 173 Upper incisors small, in a slightly convex, continuous row, the outer separated from canine by space equal to length of cutting edge of i1. Inner incisor fully double the bulk of outer, though the two when viewed from in front do not differ materially in form, their crowns being low, longer than high, with nearly horizontal cutting edge. Outer incisor wider relatively to its length th^n inner. Mandibular incisors very small, with low, flat, rounded crowns, the outer not as small as inner. They extend between c
. The families and genera of bats . Bats; Bats. THE FAMILIES AND GENEEA OF BATS. 173 Upper incisors small, in a slightly convex, continuous row, the outer separated from canine by space equal to length of cutting edge of i1. Inner incisor fully double the bulk of outer, though the two when viewed from in front do not differ materially in form, their crowns being low, longer than high, with nearly horizontal cutting edge. Outer incisor wider relatively to its length th^n inner. Mandibular incisors very small, with low, flat, rounded crowns, the outer not as small as inner. They extend between canines in a slightly convex row broken by minute spaces, of which the median is the most distinct. Canines simple, without secondary cusps, the upper somewhat less than half as long as high, with well-developed cutting edges but with concave area on inner surface shallow. Lower canine slender, the shaft nearly terete, the posterior basal edge produced into a distinct heel. First upper premolar small, scarcely equal to inner incisor, its crown very low, longer than broad, with indis- tinct cutting edge rising to a slight an- gle anteriorly. Upper molars longer than broad; protocone low and broad, forming the entire shelf-like, broadly rounded inner edge of tooth; paracone and metacone low and long, about equal in to * and to2, the metacone much smaller in wa; between paracone and metacone a distinct though very small elevation, probably the remnant of the mesostyle; inner half of crown flat, outer half rising at a distinct angle; to 2 slightly smaller than m 1; to 3 more than half as large as to 2 slightly smaller than to 1; to 3 more than half as large as to 2. Lower molars long and narrow, the second somewhat more than half as long as first, the third about half as large as second. Crown of m 2 and to 3 flat, the central portion distinctly concave, the margin without cusps; to 1 with a similar concavity occupying pos- terior two-thirds of crown, the anterior third rising into
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbats, bookyear1907
