BRITISH FOSSILS. 3 



jections occur, irregularly scattered over the exposed portions of the 

 scales. 



Locality. — Found in a concretion of hard lias at Lyme Regis. 



Explanation or Plate. 



Fig. 1. Thrissonotus Colei, size of nature, 

 rig. 2. Nuchal scale, magnified. 

 Fig. 3. Abdominal scale, magnified, 

 rig. 4. Caudal scale, magnified. 



P. DE M. Grey Egerton. 



February 1857. 



