134 EDENTATA. 



Although the present form is apparently distinct from all described 

 species, with the exception of the so-called Glyptodon clavipes of 

 Burmeister, the writer thinks it inexpedient at present to assign to 

 it a distinct specific name. 



Eab. South America (Uruguay, and (?) Argentine Republic). 



40661. The extremity of the terminal tube of the caudal sheath ; 



(Fig.) from the Pleistocene of Uruguay. This specimen, although 

 of considerable larger size, apparently agrees very closely 

 with the terminal tube figured by Burmeister, under the 

 name of Glyptodon clavipes, in the ' An. Mus. Buenos 

 Aires,' vol. ii. pi. xl. figs. 7, 8, showing the irregular 

 arrangement of the disks on the ventral surface (fig. 7), 

 and the large subcircular lateral ones (fig. 8), which 

 decrease regularly in size from the hindmost one. In the 

 terminal tube of a caudal sheath referred by Owen ^ to 

 G. clavipes, but which, as already mentioned, probably 

 belongs to Hoplopliorus, the lateral disks are oval, and the 

 two last are much larger than the others, while on the 

 ventral and dorsal aspects the disks are less numerous and 

 of a decidedly oval form. The upper surface of the present 

 specimen is represented in the accompanying woodcut (fig. 

 24), where the form of the disks is well shown. Its trans- 

 verse diameter is 0,144, against 0,075 in the corresponding 

 element of U. ornatus (supra, p. 129). 



Presented by W. G, Lettsom, Esq., 1867. 



Fiff. 24. 



Hophphorus (?) sp. — Dorsal aspect of the extremity of the terminal tube of the 

 oaudal slieatli ; from the Pleistocene of Uruguay. ^, 



39405. Fragment from the anterior region of a carapace, showing 

 nir.e scutes, which agrees in relative size with tlie pre- 



^ Cat. Foss. Maram. Aves Mus. E. Coll. Surg. pi. i. (side view), and pi. ii. 

 figs. 5 and G (dorsal and ventral views). 



