. The families and genera of bats . Bats; Bats. 252 BULLETIN 5*7, UNITED STATES NATIONAL MUSEUM. not forming noticeable secondary cusps, except occasionally at pos- terior base of lower tooth. First upper premolar {pm -) minute but perfectly in tooth row and not specially crowded. Second upper pre- molar (pm1) not in contact with canine, well developed, and with large antero-internal cusp. Lower premolars normal in form" and size, the first not as high as second, but with the cross section nearly as great. Molars normal; m x and m 2 with inner segment large", the terete hypocone unus
. The families and genera of bats . Bats; Bats. 252 BULLETIN 5*7, UNITED STATES NATIONAL MUSEUM. not forming noticeable secondary cusps, except occasionally at pos- terior base of lower tooth. First upper premolar {pm -) minute but perfectly in tooth row and not specially crowded. Second upper pre- molar (pm1) not in contact with canine, well developed, and with large antero-internal cusp. Lower premolars normal in form" and size, the first not as high as second, but with the cross section nearly as great. Molars normal; m x and m 2 with inner segment large", the terete hypocone unusually distinct; m3 with crown area more' than half as great as that ofm'orm2 and about equal to that of pm4; the metacone and three commissures well developed. Lower molars with all the cusps normal in size and form, the three inner approxi- mately equal in height. Skull (figs. 41^3) with rounded or some-. 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 Miller, Gerrit Smith, 1869-. Washington : Govt. Print. 0ff.
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbats, bookyear1907
