32 PROFESSOR HUXLEY ON THE OSTEOLOGY OE THE GENUS GLYPTODON. 
of the Arapey Grande, an affluent of the Uruguay) are formed. The skeleton of the 
Megatherium now at Madrid was found in a similar clay which underlies Buenos Ayres. 
The femur and the fragment of caudal armour were procured from the banks of the 
Quegnay, a more northern affluent of the Uruguay than the Arapey. 
Weiss remarks upon these fossils ( l . c. p. 276) “that it can hardly he doubted that 
they belonged to no other animal than the Megatherium , Cuv. Cuvier himself pub- 
lished, in a note to p. 191 of his ‘ Recherches sur les Ossemens Fossiles,’ t. v. l e partie, 
the first information which he received, in 1823, that his Megatherium was a loricated 
animal. M. Laranaga, parish priest of Monte Video* (from whom this information 
was derived, and in whose house M. Sellow, in 1822, saw two fragments of the 
armour, one belonging to the back and the other to the tail, which were found between 
Monte Video and Maldonado, in a gully opening into the Arroyo de Solis), believed the 
animal to be an Armadillo, Dasypus ; Cuvier had already pointed out the similarity of 
the extremities to this genus and to Myrmecopliaga. However, the armour plates found 
on the Arapey show no trace of a zonary arrangement, and the fragments possessed by 
M. L Aran ag a also leaving a doubt on this point, it may remain an open question whether 
the Megatherium possessed a veritably jointed armour, or whether it was not more 
probably provided with a solid shield.” 
The figures show, and Professor Weiss remarks upon, the raised conical form of the 
marginal pieces of the carapace. 
In the course of his description of the parts of the skeleton of a Megatherium sent to 
this country by Sir Woodbine Parish, Mr. Clift f remarks, “ In these latter instances 
the osseous remains were accompanied by an immense shell or case, portions of which 
were brought to this country ; but most of the bones associated with the shell crumbled 
to pieces after exposure to the air, and the broken portions preserved have not been 
sufficiently made out to be, at present, satisfactorily described. Representations, how- 
ever, of parts of the shell in question are given in the plate annexed.” 
The plate (46) to which reference is here made exhibits views of the inner and 
outer surfaces of parts of the carapace of a Glyptodon. In a note (p. 437) Mr. Clift 
mentions that casts of the principal bones in question have been sent, among other 
places, to the Jardin des Plantes at Paris. 
The next work upon this subject in the order of time, is the very valuable essay com- 
municated by Professor E. D’Alton to the Berlin Academy in 1833 Sellow had 
* [“ A friend of natural history and, in every way, an estimable man, who has now unfortunately become 
blind,” writes M. Sellow regarding him to M. von Olfers on the 10th October 1829. We can therefore no 
longer look for the appearance of his promised essay on these fossil remains.] 
t “ Some account of the Remains of the Megatherium sent to England from Buenos Ayres by Woobblne 
Parish, jun., Esq., F.G.S., E.R.S.” By William Clift, Esq., E.G.S., F.R.S. Bead June 13, 1832. Transactions 
of the Geological Society, vol. iii. 2nd series. 
t “ Ueber die von dem verstorbenen Herrn Sellow aus der Banda Oriental mitgebrachten fossilen Panzer- 
Eragmente und die dazu gehorigen Knochen-Ueberreste,” with four plates. The volume of the * Abhand- 
lungen der Koniglichen Akademie der Wissenschaften,’ in which this essay appears, was published in 1835. 
