132 EDENTATA. 



The two following specimens (Claussen Collection, purchased, 1845) 

 from the Caves of Mi^ias Geraes, appear specifically identical 

 with the preceding . 



M. 3624. Fragment from the anterior half of the carapace. 



M. 3625. Fragment from the anterior half of the carapace. 



Hoplophorus, sp. 



This form, which may be identical with one of the preceding, was 

 apparently somewhat larger than H. ornatus. 

 Hah. South America (Uruguay). 



M. 76. The hinder portion of the terminal tube of a caudal sheath, 



{Fig^) with the enclosed vertebral column ; from the Pleistocene 



of Monte Yideo, Uruguay. This specimen (woodcut, 



Fig. 23. 



Hoplophorus, sp. — Dorsal aspect of the extremity of the terminal tube of the 

 caudal sheath ; from the Pleistocene of Uruguay. \. 



fig. 23) is larger than the corresponding element of E. 

 ornatus ; the lateral enlarged disks are four in number, 

 and mesially convex instead of saddle-shaped, while the 

 superior disks are more nearly circular. It differs from the 

 caudal sheath of the large form noticed on the next page, 

 not only by its inferior dimensions, but by the equal size of 

 the disks on the dorsal surface, and the absence of a 

 row of small disks between the two enlarged terminal 

 ones. Presented by W. G. Lettsom, Esq., 1881. 



Hoplophorus elegans, Burmeister '. 

 Syn. Hoplophorus radiatus, Gervais and Ameghino^ {ex Bravard). 

 Each scut;G is of small size and subquadrangular ; the central 

 disk is sliehtlv rugose and concave, and the peripheral disks are 



^ An. Mus, Euenos Aires, vn]. ii. p. 211) (1871). 



2 Mammiferes Fossiles de lAm6rique Meridionale, p. 194 (1880). 



