to the Thibetan plateau are O. hodgsoni and O. nahura. Corsica has the Mouflon, O. musimon; and the Barbary Sheep or Arui, O. tragelaphus, is found only in Northern Africa. Ovis burrhel and O. blanfordi are Indian forms.
Fig. 174.—Thar. Capra jemlaica. × 1⁄10. (From Nature.)
Ovis nahura is chiefly responsible for the impossibility of strictly separating the Sheep and Goats. It has no suborbital glands or lachrymal fossae, which are as a rule present in the Sheep and absent from the Goats. On the other hand interdigital glands are present, which is the case with Sheep. Its habits, too, are a blending of those of the Sheep and the Goat. It lives largely on undulating ground like Sheep, and frequently lies down during the day on its feeding ground. On the other hand it is, like the Goats, a splendid climber.
The Goats, genus Capra, differ from the Sheep in their slighter build and in the fact that the horns are not spirally curved, but arched over the back. There is also the characteristic beard,
