The little Pichi-chago (or, more correctly, Pichy-ciego), _Chlamydophorus_, which only grows to about 5 inches in length, has no movable bands at all. It is covered with a uniform series of plates, which, moreover, are not discontinuous at the neck. It differs, too, from the prevailing Armadillo-type by the absence of conspicuous external ears. In the anterior part of the body the armature consists of little more than the horny plates, which in other Armadillos overlie the bony dermal plates. In the hinder region the bony plates are strong. In this animal, therefore, we have the dermal armature reduced to a minimum; but it must be noticed that, like the extinct Glyptodons, the armature is continuous and nowhere ringed. The genus _Tolypeutes_, of which the best-known species is _T. tricinctus_, the Apar (there are two other species in the genus), can roll itself up into a ball like the Pill-Millipede (_Glomeris_), and, protected by its armour, roll away from its enemies like the Arthropod under similar circumstances. This mode of protection, be it observed, is also adopted by the Pangolin and by the {177} Hedgehog. The genus has only three movable bands. The tail is short, and is covered with large tubercles. This genus is very markedly digitigrade when running. [Illustration] FIG. 103.--Three-banded Armadillo or Apar. _Tolypeutes tricinctus._ x 1/4. [Illustration] FIG. 104.--Peludo Armadillo. _Dasypus sexcinctus._ x 1/4. (After Vogt and Specht.) The Peludo, _Dasypus sexcinctus_, is, like other Armadillos, an omnivorous creature, and appears to be particularly fond of carrion. It will burrow up to a decaying carcase like the ground-beetles. {178} Mr. W. H. Hudson has described the way in which this Armadillo will kill a snake by holding it down and literally sawing the reptile in half by help of the sharp and serrated edges of the carapace. _Dasypus_ has a very short tail, which is shielded by distinct rings near the base. _Tatusia novemcincta_ is a species with nine movable bands. The genus has four teats; the ears are near together. There are no caeca and no azygos lobe to the lung. A species apparently belonging to this genus, but described under the generic names of _Cryptophractus_ and _Praopus_, is remarkable for the thick covering of hair, not entirely wanting but usually thin in other Armadillos. In this particular species the coat of hair is so thick as to conceal the underlying plates of the carapace. The individual hairs are stiff, and one inch and a half in length.[111]