60 



BRITISH FOSSILS. 



Locality, — Mr. Peacli found this specimen near Thurso, and 

 described it as a smaller species than the preceding one " with 

 strong and long spines, and as if clothed with a thick skin." The 

 specimens figured are in the collection of the Museum of Practical 

 Geology. 



Explanation of Plate YI. 



Fig. 1. Acantliodes Peachi, size of nature. 

 Pig. 2. „ „ enlarged once. 



Fig. 3. Acantliodes coriacevs, size of nature. 

 Fig. 4. „ „ enlarged twice. 



Fig. 5. Scales of ditto, greatly magnified. 



p. DE M. Grey Egerton. 



Oulton Park Nov. 27, 1 860. 



