in the Museum of Buenos Ayres. 83 
don*, and also introduces three new species, which he terms 
Glyptodon ornatus, G. tuberculatus, and G. reticulatus, founding 
the specific differences on the varied form of the plates of the 
surface of the shell. But as the foot of the animal described in 
the last publication of Owen was incomplete, Miiller,the celebrated 
physiologist of Berlin, published a fresh description of the entire 
foot in the Transactions of the Academy of Berlin for 1846. 
All these descriptions were founded on specimens discovered 
in the province of Buenos Ayres or in the Banda Oriental. 
There are undoubtedly remains of the same animal in other 
parts of South America, but in no other part of the world. In 
Brazil, a Danish naturalist, the learned Dr. Lund, occupied him- 
self for a long time in the study of the fossil bones discovered 
in the natural caverns of Minas Geraes. Amongst these, remains 
of the Glyptodon were discovered by him; but as he was not 
aware of the works recently published in Europe, he described 
the animal under a new name, terming it Hoplophorus, from the 
“strong shell,” and signalized three species, Hoplophorus Sel- 
lowii, H. euphractus, and H. minor+. <A year afterwards, he 
published in the same ‘Transactions’ (vol. ix. 1842) the de- 
scription of new fragments, and amongst others the teeth, and 
the five sacral vertebre in one piece. 
Such was the state of the scientific knowledge of Glyptodon 
before the publication of the work of M. Nodot, Director of the 
Public Museum of Dijon in France, to whom a French resident 
had transmitted from Buenos Ayres many portions of the Glyp- 
todon and an almost complete shell. This work has not yet 
fallen into my hands, and for this reason I am ignorant of its * 
contents excepting from the notices in scientific journals, which 
state that its author recognizes fourteen species of Glyptodon, 
dividing them into two divisions, Glyptodon and Schistopleurum, 
founded respectively on the Glyptodon clavipes and the Glyptodon 
tuberculatus of Owen. To the Glyptodon belong twelve species, 
which are again subdivided into two groups by the form of the 
tail, which in some is short and conical, and in others is long 
and cylindrical. 
Finally Prof. Huxley, of the College of Surgeons of London, 
has published some notices on an incomplete skeleton presented 
to the Museum of the Royal College of Surgeons by Sehor Don 
Juan Nepomuceno Terrero, of Buenos Ayres; and the brother 
of this gentleman, Don Federico Terrero, has published a trans- 
lation of Huxley’s description in the ‘ Nacion Argentina’ of the 
Ist of July of the current year, to which he has added some 
* Descriptive Catalogue of the Collection of the Royal College of Sur- 
geons, vol. i. London, 1845. 
+ Trans. Royal Academy of Copenhagen, vol. viii. 1841. 
6* 
