GLYPTODONTID.E. 123 



Dadicurus yiganteus, Burmeister 1 . 



Dcedicurm uruyuayensis, H. Gervais and Ameghino 2 . 



Da-dicurus yiyas, Ameghino 3 (ex Bravard, MS.). 



This species was originally founded upon the tube of a caudal 

 sheath (No. 19955), and a precisely similar specimen was made the 

 type of D. uruquayensis. The so-called G. yiganteus was founded 

 upon a pelvis, which according to Burmeister belongs to the same 

 species as the caudal sheath ; this identification being made upon the 

 evidence of a skeleton in the museum at Buenos Ayres. 



The total length of the animal is given by Burmeister as twelve 

 feet. 



Hub. South America (Argentine Republic and Uruguay). 



19955. The nearly complete terminal tube of the caudal sheath, 



(Fig.) together with the enclosed vertebral column ; from the 



Pleistocene of Buenos Ayres, Argentine Republic. This 



specimen is the type, and is figured by Mantell in his 



' Petrifactions, &c.,' p. 359, fig. 75. 



Purchased, 1846. 



M. 3615. The extremity of the terminal tube of the caudal sheath ; 

 from Buenos Ayres. This specimen is of rather larger 

 size than the preceding, but presents no structural dif- 

 ference. No history. 



39482. Cast of the greater portion of the terminal tube of the 

 caudal sheath. The original was brought by Villardebo 

 from the Pleistocene of Uruguay, and is preserved in the 

 Ecole Normale Superieure of Paris ; it is figured by De 

 Blainville in his ' Osteographie/ Genus Glyptodon, pi. i. 

 figs. 4, 5, and by Nodotinthe ' Mem. Ac. Nat. Sci. Dijon,' 

 ser. 2, vol. v. pi. viii. figs. 6-8. This specimen is the type 

 of D. uruyuayensis, but differs in no respects from the two 

 preceding specimens. By exchange, 1865. 



Genus EURYURUS, H. Gervais and Ameghino 4 . 

 The carapace is thick and composed of articulated subquadran- 

 gular scutes, which have no sculpture, but are simply rugose. 

 The caudal sheath has several movable rings, and is terminated 



1 An. Mus. Buenos Aires, vol. ii. p. 394 (1870-74). 



2 Mammiferes Fossiles de 1'Amerique Meridionale, p. 182 (1880). 



3 Bol. Ac. Nac. Cordova, vol. v. p. 30 (1883). 



4 Mammiferes Fossiles de 1'Amerique Meridionale, p. 184 (1880). 



