FISHES OF THE CHALK. 
145 
scribed in the Fossils of the South Downs, and 
which the sagacity of Dr. Buckland (assisted by 
the analysis of the substance in question, by Dr. 
Front) has proved to be the faecal remains of cer- 
tain fishes, the peculiar manner in which they are 
coiled up, depending on the structure of the intes- 
tinal tube through which they have passed ; their 
animal origin, as stated in my former work*, had long 
since been suggested by Mr. Konig. I have two 
specimens of the ichthyolite described under the 
name of Amia^ in which coprolites occur in the body 
of tlie fish, and in both instances are lying near the 
air bladder : and it is remarkable that these are not 
spirally twisted, as in the generality of specimens, 
but appear to have been situated in the upper part 
of the intestinal canal, and, not having passed through 
the tortuous part of the tube, do not possess the 
spiral structure. Three coprolites of the usual 
character are here figured. 
COPROLITES FROM THE CHALK. 
REPTILES. 
The bones and teeth of several species, belonging 
to various genera of oviparous quadrupeds, have 
been found in the chalk near Lewes. 
* Geology of Sussex, p. 103. 
L 
