140 
FISHES OF THE CHALK 
of seven or eight rays remains. The tail is alto- 
gether wanting. 
An extraordinary fact relating to this ichthyo- 
lite remains to be noticed : it is, that the body is 
very generally uncompressed ; being almost cylin- 
drical, and evidently as perfect in form as when 
recent. It would seem as if the fish had been sud- 
denly surrounded by a soft cretaceous mass, which 
consolidated before the form of the original had 
been changed by decomposition. 
The maxillae of a fish which closely resemble 
those of the Esox or Pike, have established the 
species to which we have given the name of Esox 
Lewesiensis. 
JAWS OF ESOX LEWESIENSIS. 
The specimen here represented is evidently the 
jaws of a fish, wliose recent prototype is unknown. 
The dentature of tlie maxilla* in certain species of 
