282 



That gentleman has kindly informed us, that he has 

 been enabled to ascertain the presence of the following 

 fish in the chalk, near Lewes : and plates of the several 

 specimens are presented to us in his work. 



Squalus cornuhicus. 



Q « mustelus. 



,£5 / zyyena. 



galeus. 



Diodon, an unknown species of. 



Balistes, an unknown species of. 



Muroena Lewesiensis. 



Anarrhicas lupus, moiar teeth and jaws. 



Salmo Lewesiensis. 



Esox Leivesiensis. 



Arnica ? Letresiensis. 



Zeus Lewesiensis. 

 The remains of fishes are frequently found in the 

 London clay, in various degrees of preservation: not only 

 are the numerous teeth of cartilaginous fishes found here in 

 their various figures — triangular, conical, single pointed, 

 tricuspidated, tridentated, lanceolated, &c. and from more 

 than an inch in length to very small sizes — but others, 

 belonging to spinous fishes, varying considerably in their 

 forms and sizes, are found still affixed in their bony 

 sockets. The skeletons of some of these fishes still remain, 

 but so fixed in their hardened matrix as to be very diffi- 

 cultly separable. 



These teeth are mostly referrible to different species of 

 the genus squalus ; and are spoken of, by former writers, 

 under the different appellations, plectronites, rostrago^ &c. 

 The bony tongue and palates of different species of the 

 genus rata, particularly of rata pastinacea, are also found 

 completely mineralized in this formation. 



Ceti. — The fossil remains of whales are less frequently 

 found than might be expected. Part of the long projecting 

 and spirally-twisted tooth of the narwhal, improperly 

 termed monodo?i jnonocerosy exists in a fossil state, and> 



