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قراءة كتاب Geographic Range of the Hooded Skunk, Mephitis macroura With Description of a New Subspecies from Mexico
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Geographic Range of the Hooded Skunk, Mephitis macroura With Description of a New Subspecies from Mexico
slightly larger average size throughout and relatively longer tail.
Remarks.—M. m. eximius is regarded as a subspecies of M. macroura because there is some overlap in size between larger individuals of M. m. eximius and smaller individuals of M. m. macroura. Actually, as indicated above, we doubt that the geographic ranges of the two subspecies are continuous or that the geographic range of M. m. eximius is continuous with the geographic range of M. m. vittata. Small size and relatively long tail characterize both of the lowland, tropical subspecies, eximius and vittata, whereas the two upland subspecies of the temperate areas are larger and have relatively shorter tails.
Habitat closely resembling that at the type locality extends from the southern base of the first mountains north of Jalapa southward as far as the north base of the Tuxtla Mountains—a distance of approximately 110 miles from northwest to southeast along the gulf coast. None of our 5 skins shows the hooded color-pattern so common on the Mexican Plateau and in vittata of Oaxaca. One of our five specimens has well-developed lateral stripes; three have greatly reduced lateral stripes and one is black except for a white spot on the right hip.
Measurements.—An adult male (University of Kansas Museum of Natural History Catalogue Number, 17900), a subadult male (19273), and adult female (19272, the holotype) and a subadult female (19902), measure, in millimeters, respectively, as follows: Total length, —, 599, 578, 583; length of tail, —, 319, 335, 305; length of hind foot, 58, 62, 58, 60; basal length of skull, 56.1, 55.0, 52.8, 53.1; basilar length of Hensel, 53.6, 52.6, 50.3, 51.2; greatest zygomatic breadth, 41.6, 38.0, 39.0, 37.0; greatest mastoid breadth, 34.6, 34.3, 33.3, 31.5; breadth across postorbital processes, 22.2, 20.2, 20.5, 21.0; least interorbital breadth, 20.3, 18.2, 19.0, 18.5; palatal length, 24.2, 25.1, 24.2, 24.0; postpalatal length, 31.5, 29.6, 28.8, 29.0; foramen magnum to plane of last molars, 30.8, 29.4, 27.5, 29.0.
Specimens examined.—Total number, 5, all from Veracruz, Mexico, as follows: Rió Blanco, 20 km. WNW Piedras Negras, 3; 15 km. W Piedras Negras, 300 ft., 2.
University of Kansas Museum of Natural History, Lawrence, Kansas.
Transmitted October 31, 1949.
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