FLOOR.] 
FOSSILS. 
29 
must have been from ten to eleven feet in height. In the D. ele- 
phantopus the bones of the legs are as thick as those of the D. gigan- 
teus; but they are much shorter. Two legs of this last-mentioned 
bird, and an entire skeleton of the D. elephantopus, will be found, set 
up, in Room No. VI. 
To return to the Reptilian remains. The series is continued in the 
Wall Case 1, where, in a large slab of Purbeck stone, from Swanage, 
is imbedded a considerable portion of the skeleton of the " Swanage 
Crocodile," Goniojjholis crassidens. In the corner Case are portions 
of the skull, lower jaw, &c., of a gigantic Reptile, allied to the Lizards ; 
it is from the upper chalk formation at Maestricht. The most in- 
structive illustration of this Reptile is the cast of a nearly entire skull, 
presented by Baron Cuvier, who published a detailed account of the 
animal in his great work on Fossil Remains, adopting for it the name 
Mosasaurus (Crocodile of the Meuse), proposed by Conybeare. 
In Case 2 will be found the remains of the large and very remarkable 
Reptile, called Dicynodon, discovered in South Africa by Mr. A. G. Bain. 
The animal is especially remarkable, inasmuch as, although it belongs 
to the Lizard tribe, it possessed but two teeth, and these in the form 
of large tusks, descending nearly vertically from the upper jaw. Here 
also are deposited the Pterodactyles, or Flying Lizards ; and, at the 
end of the Case, various bones of the skeleton and parts of the shell of 
the enormous Tortoise from India, of which a restored model will be 
found in the Lobby to Room No. I. 
In Case 3 are the remainder of the Fossil Tortoises and Turtles ; 
and in Cases 4, 5, and 6, commences the series of the large Sea-reptiles 
(Enaliosaukia). They present two well-marked modifications of struc- 
ture — the Plesiosauri, in which the neck is long and the head small, 
and which are arranged in this room ; and the Ichthyosauri, in which 
the head is large, and joined to the body by a very short neck ; they 
"will be found in the next room. 
The Wall Case No. 7, at the end of the room, contains Mammalian 
remains of the Ruminant tribe — animals allied to the Ox, Sheep, &c. 
ROOM IV. 
Here the series of Reptilian remains is continued, by the Sea-rep- 
tiles already alluded to in the account of the preceding room, the 
Ichthyosauri occupying the Wall Cases 1-5 ; and in the Wall Cases at 
the end of the room is continued the suite of Mammalian remains 
belonging to the order Rumiuantia. 
ROOM V. 
Here the Wall Cases are occupied by Mammalian remains. Those to 
the left of the Entrance Doorway chiefly contain the Quadruped 
remains found in the caverns of England, Germany, and France, 
including a series of the Fossil species of Bears, Hyaenas, &c. To the 
right of the Doorway are arranged the Mammalian remains of the 
lower tertiary period — they are chiefly from France. The Wall Cases 
