484 THE LIAS AMMONITES. 



some degree a horse's hoof. Around its convex border, and within each half of the 

 body as well as towards the two projecting terminations, there are traces of a muscular 

 attachment. This Anaptyclms is another of the bell-shaped type. Its figure reminds 

 me of a very fine Anaptychus contained in the body chamber of a large Arietites 

 Bucklandi, which had been used in building a part of the Bath Station, and which I saw 

 protruding from the stone the last time I visited that city. 



The lists of British fossils given in my account of the Zones of the Lias Formation 

 (pp. 14 — 149), and derived from the Memoirs of various authors, contain references to a 

 few species of Ammonites not figured by me. The omission has arisen from the fact 

 that these forms have not come before my notice in any of the English museums or 

 private cabinets I have investigated. In all probability the identification of the 

 Ammonites in question with foreign species was not perfectly accurate. 





