. The families and genera of bats . Bats; Bats. 212 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. outer upper incisor, make it seem possible that the animal is gener- ically distinct from tickelli and blanfordi. The peculiarities of the prepuce and the presence of a large bone in the penis may indicate, as supposed by Dobson, that the three species form a single group, but the value of these characters is not yet well understood. Genus TYLONYCTERIS Peters. 1872. Tylonycteris Peters, Monatsber. k. preuss. Akad. Wissensch., Berlin, p. 703. 1878. Vesperus Dobson, Catal. Chiropt. Brit. Mus., p. 184
. The families and genera of bats . Bats; Bats. 212 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. outer upper incisor, make it seem possible that the animal is gener- ically distinct from tickelli and blanfordi. The peculiarities of the prepuce and the presence of a large bone in the penis may indicate, as supposed by Dobson, that the three species form a single group, but the value of these characters is not yet well understood. Genus TYLONYCTERIS Peters. 1872. Tylonycteris Peters, Monatsber. k. preuss. Akad. Wissensch., Berlin, p. 703. 1878. Vesperus Dobson, Catal. Chiropt. Brit. Mus., p. 184 (subgenus Yes- perugo) part. 1898. Tylonycteris Miller, Proc. Acad. Nat. Sci. Philadelphia, p. 321, July 25, 1898 (genus). Type-species.—Vespertilio pachypus Temminck. Geographic distribution.—Malay region from Tenasserim to the -Philippine Islands. Number of forms.—Only one species is now recognized. Characters.—Externally like a small Ep- tesicvs with the entire head greatly broadened and flattened and a conspicuous fleshy pad on ball of thumb and sole of foot. Skull (fig. 34) so broad that depth of brain case through audital bulla is barely one-half mastoid breadth; upper surface flat, sloping gradu- ally forward to nares; rostrum very short and broad, its length scarcely equal to lachrymal —tylonycterispachy- breadth, its depth at front edge of orbit less pus. adult male, tkong, than ha]f breadth at same region; maxillaries LowekSiam. xl'. f ' . not concealing tooth rows when viewed from above; a distinct blunt projection over anterior upper edge of orbit, perhaps representing an incipient postorbital process. Dental form- ula as in Eptesicus, and teeth not peculiar except in the following characters: Inner upper incisor conspicuously, bicuspidate, its crown much longer than broad and nearly as long as high, the outer cusp projecting noticeably inward, so that the greatest width of the tooth is at level of its point; upper canine with a well-develo
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectbats, bookyear1907
