I ^6 



PICHV-CIEGO AND APAR 



ac 



cus 



isch. 



ohl^t 



or 



and the third enormously enlarged. This latter fact recalls 

 the arrangement characteristic of Myrmccopkaga. The pelvis is 



greatly attached hy the 

 ischium to the verte- 

 bral column. The 

 femvir has a third tro- 

 chanter. 



The various forms 

 ecl.tub of Armadillos are 

 largely distinguished 

 by the number of mov- 

 able thin l)ands of 

 scutes lying between 

 the large anterior and 

 posterior shields. Tims 

 we have Dasypus sex- 

 cinctus, Tolypeufcs tri- 

 cinctus, etc. 



The httle Pichi- 

 chago (or, more cor- 

 rectly, Pichy - ciego), 

 Chla;mydo2)horvs,\\hiQh 

 only grows to about 5 

 inches in length, has 

 no moval)le 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 

 tlie 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 contiiuious and nowhere ringed. 



The genus Tolypcutes, 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 l)y 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- 



FiG. 102. — Pelvis and sacrum of Armadillo. Dasijpus 

 sexcinctua. «c, Acetabulum ; iY, ilium ; we/;, ischium ; 

 obt.fur, obturator-forauieu ; pect-tnh, pectineal tuber- 

 cle ; pub, pubis. (From Parker and Haswell's 

 Zooloijy.) 



