GALLERY.] 
NATURAL HISTORY. (FoSsils.) 
77 
which are here arranged in the three divisions at the right-hand of the 
Case, they include both examples of the true Crocodiles, and of the 
long and slender snouted Gavials (or rather gharials). Cases 1 and 2 
are under arrangement. In the first are the remains of the well-known 
Swanage Crocodile (Goniophilus crassidens, Owen) from the wealden 
strata of Swanage and Tilgate. They are included in the large flat slab 
against the wall, and on the small shelves beneath, in the corner, may 
be noticed the gigantic Fossil Salamander from CEningen ( Crypto- 
hranchusdihivii-testis)^ the subject of Scheuchzer’s dissertation, Homo 
diluvii testis et thescopos.'^ The most important specimen in Case 2 
is the cast of the head of the Mosasaurus, the large reptile from Maes- 
tricht, presented by Baron Cuvier. Case 3 is occupied by the 
Fossil Chelonian reptiles, including the Tortoises and Turtles, the re¬ 
maining Cases, 4, 5, and 6, as well as the Wall Cases on the south side 
of Room IV, contain the Enaliosauria, or Sea Lizards. In Room III. 
are the long-necked species, the Plesiosauri, and in Room IV. are the 
short-necked species (Ichthyosauri). Among the former may be par¬ 
ticularised the Plesiosaurus Hawkinsii, chiefly from the lias quarries of 
Street, a species named by Professor Owen, after the author of the 
work entitled “ The Book of the Great Sea Dragons,” in which are 
figured the greater portion of the specimens here arranged;—the 
species from Lyme Regis, first described by Mr. Conybeare, and 
named P, dolickodeirus, its neck being nearly equal in length to the 
body and tail united;—the P. rugosus from the lias near Belvoir 
Castle, presented by H. G. the Duke of Rutland, being a unique and 
nearly complete specimen of this species;—the specimen of a Plesio- 
saure, of which an account and figure have been given in the Philo¬ 
sophical Transactions for 1719, by Mr. Stukeley. 
Before quitting this room, should be noticed the contents of Cases 
7 and 11. These are occupied by the Mammalian remains, which 
form a continuous series, in the corresponding Cases in Rooms IV. 
and V. In Case 11 are nearly all the most characteristic parts of 
the skeleton of the Sivatheiium, a large four-horned Ruminant, 
forming part of the great Sewalik-Hill collection presented by 
Captain Cautley. Some remains of a Fossil Giraffe, and also of a 
Camel, from the same collection, are also here deposited. Case 7 
contains the remains of various species of Bos (the Ox tribe), cniefly 
from the Pleistocene formation of England—one of the most remark¬ 
able specimens is in the corner case, and consists of the upper portion 
of the skull, with the horns attached, of an unusually large Ox; it 
was discovered by Mr. J. Brown, of Stan way, in a mass of drift sand 
overlying the London Clay at Clacton, on the Essex Coast, and pre¬ 
sented by that gentleman, together with numerous other Mammalian 
remains, to the Museum. 
Room IV. 
In and on the Wall Cases 1 to 5, inclusive, are placed the larger speci¬ 
mens of the various species of Ichthyosaurus^ or the fish-lizard. The most 
striking specimens are the /. Platyodon in the central Case, and various 
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