188 NATURAL HISTORY. [NORTH 
Mountain near Maestricht, presented, in 1784, by the 
celebrated Peter Camper, and figured by Cuvier ;—a por¬ 
tion of a new species, from Lyme Regis, of the remarkable 
genus of flying reptiles, the Pterodactylus of Cuvier, 
described and figured by Buckland in the Transactions of 
the Geological Society, under the name of P. macronyx ; 
together with a coloured cast of the unique P. longirostris 
of Cuvier from Solenhofen, the quarry of which place has 
also furnished the small lamina of lias on which may be 
observed the impression (with some of the osseous substance 
remaining) of the last two articulations of the toe of a flying 
animal, considered by Spix as related to the Vampire, but 
which is more probably a large and distinct species of pte- 
rodactyle. 
The order of Enaliosauri is confined to the genera 
Ichthyosaurus and Plesiosaurus , among the exhibited spe¬ 
cimens of which are—a very perfect head (formerly in 
the museum of Mr. Bullock) of a pretty large specimen 
of the Ichthyosaurus communis ; —a full length specimen 
of the same (in a separate glass Case): the restored parts 
distinguished by a colour different from that of the genuine 
portion of the skeleton ;—part of the head of another of 
still larger dimensions, cut transversely to show the internal 
structure of the jaws;—the carpal bones of one of the ex¬ 
tremities of a most gigantic species ( Ichthyosaurus i?n- 
manis ) : all from the lias of Lyme Regis;—a new small 
species ( Ichthyosaurus latifrons), 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. Stukeley, 
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, 
(as likewise a cast of the same, with restorations) from 
Street in Somersetshire. 
