96 



EDENTATA 



Pseudolestodon Gervais and Ameghino. Pleistocene ; Tarija Valley, Bolivia. 



Scelidotherium Owen. Skull long and low. Muzzle elongated. The manus 

 has four digits, the pes only three. Pleistocene of South America. 



Sphenotherus Amegh. [Platyonyx Lund). Pleistocene of South America. 



Glossotherium Owen (Neomylodon Ameghino). The premaxillaries are 

 developed so as to enclose the nostrils in front. G. listai Ameghino sp. 



Fio. 119. 



Afylodon robustus Owen. Pampas formation of Buenos Aires. A, Lateral 

 aspect of skull and lower jaw. B, Inferior aspect of skull. C, Left manus 

 {R, radius ; U, ulna ; s, scaphoid ; I, lunare ; c, cuneifonn ; p, pisiform ; td, 

 trapezoid ; m, magnum ; u, unciform ; J.-V., first to lifth digits). D, Left pes 

 (ca, calcaneum; a, astragalus; n, navicular; cb, cuboid ; c", c'", cuneiform of 

 II. and III. digits ; II. -V., second to lifth digits). All figures i/e- (After Owen.) 



( = Gr>jpofherium domesiicitm Roth) was certainly a contemporary of primitive 

 man. In the cave Eberhardt, on the bay of Ultima Esperanza in Patagonia, 

 numerous remains have been found, among which were fragments of skin 

 containing dermal ossicles.^ 



In the Miocene of Santa Cruz in Patagonia the Mylodontinae are not well 

 represented ; only a few small forms existing, Xematherium (Ammotherimn, 

 Limodon) and Analcitherium Ameghino, of which the last named is more closely 

 allied to Scelidoiherium. In the structure of the skull they are very like the 

 Megalonychinae of the same period. In the Lower Tertiary of Patagonia (Pyro- 



1 Moreno, F. P., and Woodward, A. S. Proc. Zool. See, 1899, p. 144 ; 1900, p. 64. 



