100 



EDENTATA 



ORDER V 



united with ilia and two united with ischia. Pubis large and cross-bar 

 massive. Carapace large and elliptical ; a prominent median bump divides 

 it into a short posterior recurved and a long anterior decurved end. Plates 

 of carapace inside of border with round central figure surrounded by single 

 row of eight to twelve peripheral figures. Pleistocene ; Mexico. 



Fig. 124. 



Panochthus tuberculatus Owen sp. Pampas formation of the Province of Buenos Aires. Shell restored. 



1/20. (After Burmeister.) 



Family 3. Doedicuridae. 



Neuryurus Amegh. Anterior premolars small and elliptical. Carapace 

 medium to large size. Plates of carapace small and disposed in transverse 

 rows ; surface elevated in centre and pitted, without figures. Caudal sheath 

 ending in long depressed tube, composed of plates similar to those of carapace 

 excepting on lateral face, where plates are elliptical and large. Pliocene of 

 Argentina and Pleistocene of Brazil. 



Doedkurus Amegh. Head convex as in PanocMlms, and orbit completely 

 enclosed by bony ring. First premolars smaller than succeeding teeth and 

 semi-elliptical. Humerus with entepicondylar foramen. Manus with three 

 functional digits. Pes with four digits. Head shield formed of small plates 

 not suturally united. Carapace large, with anterior lateral prolongation. 

 Plates polygonal, no figures, pitted, and convex or plane with three or five 

 large openings on surface. Caudal sheath a large tube, very long, depressed 

 and thickened transversely at the end, where it is ornamented with large 

 spines. Pleistocene of Argentina and Uruguay. 



Family 4. Dassrpodidae. Armadillos. 



Armour composed either entirely of movable transverse rows of bony jylates, or of 

 consolidated pectoral and pelvic shields with movable rings lying between. Skull long, 

 low with slender muzzle. Zygomatic arch without downwardly directed process. 



Teeth (^) 



9-10/ 



prismatic, frequently heterodont. All dorsal and lumbar vertebrae 



