1862.] 317 



The mass of bony fragments which arrived from South America 

 has afforded material for the reconstruction of the carapace, and of 

 the following parts of the skeleton : the anterior moiety of the skull 

 with the entire palate ; the mandible ; some of the cervical, and the 

 greater part of the dorsal, lumbar, sacral and coccygeal vertebrae, with 

 vertebral and sternal ribs ; the pelvis and the hind limbs ; part of the 

 scapula, and an entire fore limb. And there can be no doubt that 

 all these remains belong to one and the same animal, as no duplicate 

 bones have been discovered, nor any which there is the least reason 

 to believe belong to a different individual. This circumstance gives 

 a particular value to the present specimen, apart from the fact that, 

 notwithstanding the researches of Professor Owen, of D' Alton, of 

 Lund, and of Nodot, our knowledge of the structure of the anterior 

 part of the skull, of the vertebral column and pelvis, and of the fore 

 limb of Glyptodon and its immediate allies, is either nil or extremely 

 imperfect. I now proceed to note the more important and the novel 

 anatomical peculiarities which it reveals. 



Of the skull the new specimen exhibits the anterior moiety, from 

 the anterior boundary of the cranial cavity to the anterior end of the 

 nasal bones, together with the almost entire bones of the face and 

 the lower jaw ; it thus furnishes a nearly complete supplement to the 

 fragmentary cranium, consisting of the brain-case and the nasal bones, 

 with the zygomatic processes, formerly described by Professor Owen 

 as a part of Glyptodon clavipes, and now set up in the College Mu- 

 seum, together with a carapace, a tail, and a hind foot, as the typical 

 example of that species*. In the form of the frontal bone, of the 

 orbits, of the nasal bones, and of the zygomatic process, the skull of 

 the new specimen agrees very closely with that of Glyptodon clavipes. 

 From the slighter rugosity of the supraorbital region, the less deve- 

 lopment of the temporal ridges, and the fact that the nasal suture 

 persists in the new specimen, I conceive it to have been a younger 

 animal. 



The anterior nasal aperture is trapezoidal, and narrower below 



* The parts thus combined together were not found so associated, and the 

 question may arise whether the skull, hind foot, and tail are really parts of the 

 animal to which the carapace (on whose characters the species is founded) be- 

 longed. Provisionally I assume that they are. But so many difficulties are in- 

 volved in the precise determination of the species of these extinct Armadillo-like 

 Edentata, that for the present I leave the question open. 



