592 
Mr. Dc la Beche and Mr. Conybeare on 
Another head, but apparently of a different species, has been 
found in the Portland limestone in the Isle of Purbeck, and is now 
in the possession of Mr. Johnson of Clifton. 
An immense Saurian animal, approaching to the characters of the 
Monitor, but which, from the proportions of many of the specimens, 
cannot have been less than forty feet long, occurs in the great oolite 
at Stonesfield, near Oxford. Professors Kidd and Buckland have 
been long engaged in the study of these interesting remains, and it 
is hoped may soon communicate the result of their observations to 
the public. Vertebras and phalanges of another animal, apparently 
allied to the Enalio-Sauri described in this paper, but clearly of a 
distinct genus, occur in the Kimmeridge clay in the pits at the foot 
of Shotover hill near Oxford.* 
* In Whitehurst’s Theory of the Earth, p. 184, it is mentioned that the impression of 
a crocodile was found at Ashford, in the first bed of the mountain limestone of Derby- 
shire, by Mr? Henry Watson of Bakewell. As this is very important in indicating the 
traces of these animals in an older formation than those above mentioned, and one indeed 
in which the very existence of Vertebral animals has been denied, (although certainly 
only in consequence of a very partial acquaintance with the organic remains it affords, 
among which the palatal tritores of fishes, the incisores of the shark, and the radii of 
Balistse, are not very uncommon), it is very desirable to obtain further information 
concerning this specimen, if it be yet in existence, and particularly (since the term 
Crocodile has often been very vaguely applied) a precise account of its specific characters. 
With the view of leading to such a result, we have added this note. 
The following article, extracted from the prospectus of Mr. Mantells’ expected work 
on the Geology and Fossils of Sussex, contains another interesting notice connected 
with this subject. 66 41 Lower jaw of an animal of the Lizard tribe, in chalk, con- 
taining twelve teeth. Two Vertebrae in chalk, of the celebrated fossil animal of 
Maestricht.” I am also indebted to him for the following communication on this 
subject. 
In the limestone of the Oak Tree Clay, or Weald Clay of Sussex, numerous remains 
occur of an animal of the Lizard tribe. Fragments of the ribs, clavicle, radius, pubis 
ilium, femur, tibia, metatarsal bones, vertebrae, and teeth, have been discovered ; and 
although the specimens are, for the most part, exceedingly mutilated, yet the structure 
of the original animal is very clearly indicated. From an attentive examination of these 
remains, there can be no hesitation in considering them as belonging to the same un- 
