FLOOR.] 
FOSSILS. 
37 
this group, from the Cretaceous Deposits, are arranged in Table-case 
No. 16, Koom IV. 
In the corner Case are portions of the skuli, lower jaw, &c., of a 
gigantic Reptile, allied to the Lizards ; it is from the Upper Chalk for- 
mation at iVlaestricht ; also specimens from the Chalk of England 
and the Eocene Tertiary of Alabama, United States. 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 
Jlosasaurus (Crocodile of the Meuse), proposed by Conybeare. 
In Case 2 will be found the remains of a gigantic land-lizard {Mega- 
lania) from recent deposits in Australia, now believed to be extinct. 
Considerable space is here devoted to the exhibition of a series of 
Reptilian remains from the Triassic rocks of South Africa. Tney 
include several species of the remarkable genus Dicynodon (Owen), 
discovered by Mr. A. G. Bain. These Reptiles, although allied to 
the Lizards, have the head short, and provided with but two teeth, 
and these of large size, and descending, almost vertically, from the 
upper jaw. Further examples of the South African Reptiles will be 
found in Wall Case 7, of the same room. Here are al«o placed various 
Batrachian remains from the Coal-measures, the Trias, and Tertiary 
formations, among which may be specially mentioned the head of 
Bdodon Kapffii from Stuttgardt, and the gigantic Salamander from 
CEningen (better known as the ''Homo Diluvii testis," of Scheuchzer). 
In Case 3 are the fossil Tortoises and Turtles. Amongst the most 
conspicuous of the Tortoises, are the various bones and portions of 
the shell of an enormous species from India, of which a restored 
model will be found in the lobby to Room I. Of the Turtle remains, 
the Chelone Hoffmanni, is also remarkable for it large size, the cara- 
pace being, in some specimens, as much as five feet in length. This 
Turtle is from the Upper Chalk of Maestricht, in the Netherlands. 
In Cases 4, 5, and 6, commences the series of the large Sea-reptiles 
(Enaliosadria). 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. 
On the Wall Cases 4-6, 8, and 9, are arranged fine examples of this 
group, including Plesiosanrns dolichodeirus, and rostnitus, and a fine 
head oi PLiosaurus grandis (the teeth of this latter are placed in Wall 
Case 5). 
The Wall Case No. 7, at the end of the room, contains Mammalian 
remains of the Ruminant tribe from the Sewalik Hills and other parts 
of India; and various Reptilian remains, from the Trias of South 
Africa, are arranged in the corner of this case : they form part of 
the series displayed in Wall Case 2, in the same room. 
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 
