LIST OF TEXT ILLUSTRATIONS. 



PAGE. 



Fig. I. Skulls of Santa Cruz armadillos, x f. a, Stegotherium tessdatum ; b, Pro- 



zaedius exilis ; c, Stenotatus patagonicus ; d, Proeutatus lagena . . -j 



Fig. 2. Skulls of Santa Cruz armadillos, x f. a, Stegotherium tesselatum ; b, Pro- 



zaedius exilis ; c, Proeutatus lagena. ....... 9 



Fig. 3. Skulls of Santa Cruz armadillos, x f. a, Stegotherium tesselatum; b,Pro- 



sa'edius exilis ; c, Proeutatus lagena; d, P. cenophorus. . . . . 10 



Fig. 4. Right manus of Santa Cruz armadillos, x f . a, Prozaedius exilis ; b, Steno- 

 tatus patagonicus ; c, Proeutatus robustus . . . . . . n 



Fig. 5. a, Right pes of Stcgotherium tesselatum, x f ; b, left pes of Proeutatus lagena, 



X f 12 



Fig. 6. Pelvis of Stegotherium tesselatum, left side, X f . . . . . . 30 



Fig. 7. Pelvis of Stegotherium tesselatum, x f ; a, dorsal view ; b, ventral view. . 3 1 



Fig. 8. Upper teeth of glyptodonts, x \. a, Glyptodon asper (after Burmeister) ; b, 



Propalceohoplophorus aus traits ; c, Eucinepeltus petestatus. . . . 109 



Fig. 9. Lower teeth of glyptodonts, x \. a. Glyptodon asper (after Burmeister) ; b, 



Propalaohoplophorus australis ; c, Eucinepeltus petestatus. . . . 109 



Fig. 10. Skulls of glyptodonts, leftside, x \. a, Glyptodon asper (after Burmeister) ; b, 

 Propalaohoplopliorus australis ; c, Eucinepeltus complicatus (mandible from 

 E. petestatus). ........... 1 10 



Fig, 1 1 . Skulls of glyptodonts, top view, x \ ; a, Glyptodon asper (after Burmeister) ; b, 



Propalceohoplophorus australis ; c, Eucinepeltus complicatus. . . . 1 1 1 



Fig. 1 2. Bones of left fore-limb of glyptodonts, X \. a, Glyptodon asper (after Bur- 

 meister); b, Propalceohoplophorus australis. . . . . . . 112 



Fig. 13.' Bones of the left hind-leg and foot of glyptodonts, x \. a, Glyptodon asper 



(after Burmeister) ; b, PropalceohoplopJwrus australis. . . . . 114 



Fig. 14. Upper teeth of Santa Cruz Gravigrada, x ^. a, Hapalops indiffcrens ; b, H. 

 elongatus; c, Megalonychotherium atavus ; d, Analcimorphus gigantcus ; e, 

 Schismotherium splendens ; f, Pelecyodon cristatus ; g, Hype rleptus garzoni- 

 anus ; h, Planops magnus. . . . . . . . . . 162 



Fig. 15. Lower teeth of Santa Cruz Gravigrada, x \. a, Hapalops longiceps ; b, H. 

 indiffcrens; c, H. elongatus ; d, Eucliolccops fronto ; e, Pelecyodon arcuatus ; 

 f, Prepotherium moyani ; g, Ncmatherium angulatum (marked N. sp.). . 163 



Fig. 1 6. Skulls of Santa Cruz Gravigrada, x \. a, Hapalops longiceps ; b, H. elonga- 

 tus ; c, Megalonychotherium atavus ; d, Analcimorphus giganteus ; e, Schis- 

 motherium splendens ; f, Pelecyodon cristatus ; g, Planops magnus . . 164 

 1 Erroneously marked Fig. 3 in the text. 



ix 



