128 
NATURAL HISTORY. 
[long 
mams) : all from the lias of Lyme Regis;—ra new small 
species (Ichthyosaurus latifrous), 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 Nottingham, 
and is presented by Dr. Bland.—From nearly the same 
locality is the specimen here deposited of a species of pie- 
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 Chelonid^e, we 
have some interesting specimens, chiefly from the isle of 
Sheppey. 
The only fossil species of the Batrachian Reptiles in this 
collection is the gigantic Salamander, the subject of worthy 
Scheuchzer's dissertation. Homo diliwii testis et theoscopos. 
Tiguri, 1726. 
The two upright Glass Cases of the western wall of the 
centre compartment contain osseous remains (both original 
and in plaster casts) of the orders Edentata and Pachy- 
dermata. To the former of these the Megatherium (M. 
Cuverii) 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 
casts, chiefly of the lower jaw, of two species of that ex¬ 
traordinary genus the Deinotherium, lately discovered 
in Bavaria, some of the teeth of which were known ta 
Cuvier, who supposed them to belong to gigantic tapirs; 
—jaws, tusks, molar teeth, and other osseous parts of the 
elephant (Elephas primigenius , Blumenb.), especially 
those of the Siberian variety, which is the Mammouth of 
early writers: a name erroneously transferred to the gi¬ 
gantic Mastodon (Mastodon ohioticus ). There are va- 
