176 PGE - Gls GOAN Ome al. CHAP. 
and the third enormously enlarged. This latter fact recalls 
the arrangement characteristic of Myrmecophaga. The pelvis is 
greatly attached by the 
ischium to the verte- 
bral: coltmaney aie 
femur has a third tro- 
chanter. 
The various forms 
of Armadillos are 
largely distinguished 
by the number of mov- 
able thin bands of 
scutes lying between 
the large anterior and 
posterior shields. Thus 
we have Dasypus sex- 
cinctus, Tolypeutes tri- 
cinctus, ete. 
The little Pichi- 
chago (or, more cor- 
Fra. 102.—Pelvis and sacrum of Armadillo. Dasypus ,,, oe ats . 
5 ene ie o si eG A sNny - c1eg 
sexcinctus. ac, Acetabulum; 7/, ilium ; isch, ischium ; rectly, Pichy c1ego), 
obt,for, obturator-foramen ; pect.tub, pectineal tuber- Chlamydophorus, which 
cle; pub, pubis. (From Parker and Haswell’s ike Geos fo alos & 
Zoology.) only grows to abou 
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, there- 
fore, we have the dermal armature reduced to a minimum; but 
it must be noticed that, like the extinct Glyptodons, the arma- 
ture is continuous and nowhere ringed. 
The genus Tolypeutes, of which the best-known species 1s 7. 
tricinctus, the Apar (there are two other species in the genus), can 
roll itself up into a ball like the Puill-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 Hedge- 
