GALLERY.] NATURAL HISTORY. 125 
structure of the jaws;—the carpal bones of one of the ex¬ 
tremities of a most gigantic species (Ichthyosaurus zwz- 
manis) : all from the lias of Lyme Regis;—a new small 
species (Ichthyosaurus / at ifron s), in which the spiracle 
on the top of the head, between the eyes, claims particular 
attention : this specimen was found at Balderton in the 
county of Nottingham, twelve feet under the surface, about 
three miles and a half south of Newark-upon-Trent, near 
the drain dividing the counties of Lincoln and Notting¬ 
ham : presented by Dr. Bland.—From nearly the same 
locality is the specimen here deposited of a species of ple- 
siosaure, an account and figure of which have been given 
in the Philosophical Transactions for 1719, by Mr. Stukely, 
who took it for a crocodile. A very perfect specimen, 
with head exhibiting the teeth, of the long-necked plesio- 
saure (Plesiosaurus dolichodeirus of Conybeare) from 
Lyme Regis; and another, apparently specifically distinct, 
plesiosaure (as likewise a cast of the same, with restora¬ 
tions) from Street in Somersetshire. 
As illustrative of the natural order of ChelonidjE, we 
have some interesting specimens, chiefly from the isle of 
Sheppey, and the coast of Essex. 
The only fossil species of the Batrachian Reptiles in 
this collection is the gigantic Salamander, the subject of 
Scheuchzer's dissertation. Homo diluvii testis et theoscopos . 
Tiguri , 1726. 
The upright Glass Cases of the southern wall of one 
of the compartments contain osseous remains (both original 
and in plaster casts) of the orders Edentata and Pachy- 
dermata. To the former of these the Megatherium (M. 
Ciiverii) is generally referred, of which the casts here depo¬ 
sited, though constituting only a small portion of the whole 
skeleton, are sufficient to convey an idea of the consider¬ 
able dimensions of this animal.—Among the specimens of 
the last mentioned natural order, may be specified the re¬ 
mains of two species of that extraordinary genus, the Dei - 
notherium, lately discovered in Bavaria, some of the teeth 
of which were known to Cuvier, who supposed them to 
belong to gigantic tapirs;—jaws, tusks, molar teeth, and 
other osseous parts of the elephant (Elephas primigenius 
of Blumenbach), especially those of the Siberian variety, 
which is the Mammouth of early writers : a name errone- 
