DESCRIPTION OF REPTILES. Pile 
species as the portions of jaw, teeth, and vertebrz above described ; and as these 
clearly demonstrate a species distinct from any known Gavial*, I propose to cali 
the extinct species of the eocene deposits at Bracklesham, Gavialis Divoni, after 
my esteemed friend, by whose scientific and zealous investigations so much 
valuable additional knowledge has been obtained respecting the fossils of that 
rich, but previously little-known locality. 
The tooth from Mr. Coombe’s cabinet, represented of the natural size in fig. 7 
of the woodcut, p. 208, resembles in its proportions and obtuse extremity the 
teeth of the Crocodiles rather than those of the Gavials, and at first sight re- 
minded me of those of the Goniopholis or amphiczlian Crocodile of the Wealden 
period. On comparing it closely with similar-sized teeth of that species, the 
enamel-ridges were more numerous and decided in the Goniopholis ; and the de- 
licate reticular surface in the interspaces of the more widely-separated and feebler 
longitudinal ridges in the Bracklesham tooth was wanting in the Goniopholis. 
The minute superficial characters of the enamel of the large and strong Croco- 
dilian tooth from Bracklesham closely agree with those of the Gavialis Dixont. 
It is just possible that this may be a posterior tooth of a very large individual of 
that Gavial, as the teeth become at that part of the jaw shorter in proportion to 
their thickness in the modern Gavials. If it should not belong to that Gavial, it 
must be referred to a Crocodile distinct from those species of the secondary 
strata, or those existing Crocodiles which have teeth of a similar form ; since 
they present a different superficial pattern of markings on the enamel. 
Order OPHIDIA. 
Genus PaL#opuis. 
In the ‘ Transactions of the Geological Society of London,’ 2nd Series, vol. vi. 
p. 209, pl. 22, I described and figured some fossil vertebree of a Serpent from 
the eocene clay of Sheppey, corresponding in size with those of a Boa constrictor 
* The teeth of the fossil Gavialis crassidens, F. & C., from the Himalayan tertiary beds, are rela- 
tively larger than those of the Bracklesham Gavial. The fossil Crocodilian frontal bone from the 
Montmartre eocene, described by Cuvier in the 3rd volume of the 4to Ed. (1822) of the ‘ Ossemens 
Fossiles, p. 336, and figured in pl. 76. figs. 7 & 8, shows by its form, as Cuvier has stated, that it 
belonged to a true Crocodile or Alligator, not to a Gavial. 
The extinct Crocodilians called ‘Gavials’ by Cuvier in vol. v. pp. 127, 143, belong to different ge- 
nera and to different sections of the order Crocodilia, those viz. characterized respectively by sub- 
biconcave or by convexo-concave or opisthocelian yertebre. 
