. Bulletin - United States National Museum. Science. 382 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. head and body, 53 mm.; tail vertebra?, 32; hind foat, without claw, 13; ear above crown, .">. Skull, 18 by 10. Coloration somewhat similar to that of Mus musculus, but without the salmon tint beneath. The upper surface is brownish gr&y and the under parts grayish white. The tail is scantily haired, and not distinctly bicolor. Crania/ and dental characters.—In addition to the generic charac- ters pointed out by Dr. F. W. True," the dentition is also peculiar. The molar tubercles
. Bulletin - United States National Museum. Science. 382 BULLETIN 56, UNITED STATES NATIONAL MUSEUM. head and body, 53 mm.; tail vertebra?, 32; hind foat, without claw, 13; ear above crown, .">. Skull, 18 by 10. Coloration somewhat similar to that of Mus musculus, but without the salmon tint beneath. The upper surface is brownish gr&y and the under parts grayish white. The tail is scantily haired, and not distinctly bicolor. Crania/ and dental characters.—In addition to the generic charac- ters pointed out by Dr. F. W. True," the dentition is also peculiar. The molar tubercles are paired, though not always exactly opposite. As they are ground down with wear, the enamel pattern of the grinding surfaces assumes almost a lozenge shape (fig. 68). The skull also has an unusual shape, which is shown in fig. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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