. The Cambridge natural history. Zoology. I 76 PICHY-CIEGO AND APAR. isch ohl^fi or and the third enormously enlarged. This latter fact recalls the arrangement characteristic of Myrmecopliaga. The pelvis is greatly attached by the ischium to the verte- bral column. The femur has a third tro- chanter. The various forms of Armadillos are largely distinguished by the number of mov- able thin liands of scutes lying between the large anterior and posterior shields. Thus we have Dasyinis sex- ciiictus, I'liliiiicuti'i tri- cinct'us, etc. The little Pichi- chago (or, more cor- rectly, Pichy -
. The Cambridge natural history. Zoology. I 76 PICHY-CIEGO AND APAR. isch ohl^fi or and the third enormously enlarged. This latter fact recalls the arrangement characteristic of Myrmecopliaga. The pelvis is greatly attached by the ischium to the verte- bral column. The femur has a third tro- chanter. The various forms of Armadillos are largely distinguished by the number of mov- able thin liands of scutes lying between the large anterior and posterior shields. Thus we have Dasyinis sex- ciiictus, I'liliiiicuti'i tri- cinct'us, etc. The little Pichi- chago (or, more cor- rectly, Pichy - oiego), Chlamydophoms,\NhiQ\\ only grows to about 5 inches in length, has i!(j uKivalile Imnds 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, there- fore, we have the dermal armature reduced to a minimum; but it must be noticed that, like the extinct Glyptoclons, the arma- ture is continuous and nowhere ringed. The genus Tolypeutes, of which the best-known species is T. /rici7ictus, the Apar (there are two other species in the genus), can roll itself up into a ball like the Pill-Millipede (Glonieris), and, protected b}- 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 Hedge- I'lG. 102.—Pelvis and sacrum of Armadillo. Dasypu. stixciitctas. fflc, Acetabulum; iY, ilium ; /i-rA, ischium , obturator-foramen ; 'i'h, pectineal tuber cle ; _^j7f&, pubis. (From Parker and Haswell'; ZKlloff)/.). Please note that these images are extracted from scanned page images that may have been
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