FROM THE ZONE OF AMMONITES ANGULATUS. 



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MM. Terquem et Piette notice that the species is found in great abundance at 

 St. Menge in a bed lower than that containing Grt/phaa incurva and between the strata 

 containing Ammonites himlcatus {Bucklandi) and A.angulatus. 



The specimens from Brocastle show much of the anatomy of the Coral ; and the high 

 septal number and dense wall of the coralhtes when broken ofip short are well seen 

 in them. 



The taller specimens are often denuded of their epitheca, and the highly developed 

 and inclined endotheca is then well seen. One specimen had a broad base, but the others 

 taper and become rather pedunculate. 



Locality. Brocastle. In the Collection of Charles Moore, Esq., F.G.S., Bath, 



4. MoNTLiVALTiA PARASITICA, Biincan. PI. IV, figs. 13, 14. 



The corallum is small, very short, has a base as broad as the cahce, and is elliptical 

 in outline. 



The calice is very shallow. The septa are few in number, are very irregular ; and the 

 costse run a short distance down the sides of the corallum. 



The septa are stout and unequal in length, but not very much so in thickness. The 

 shorter septa bend towards and usually unite themselves to a larger septum. There 

 appear to be twelve large septa, and five of these had either one or two smaller septa 

 joined on to them. There would appear to be two complete cycles of equal septa, 

 and that the tertiary cycle is incomplete. 



Length of the cahce \ inch. Height of the corallum ^^th inch. 



Locality. The Sutton Stone. In the Collection of Charles Moore, Esq., 

 F.G.S., Bath. 



The species is founded upon a specimen fixed upon an Astrocoenian, and the extreme 

 shortness, the attachment to a very wide base, and the union of the tertiary to the secondary 

 septa, are very distinctive. 



5. MoNTLiVALTiA SIMPLEX, Duncan. PI. Ill, figs. 16, 17. 



The corallum is short, has a broad base, and an elliptical calice, which is very shghtly 

 broader than the base. 



The epitheca is strong, does not show any costse, and it reaches to the calicular 

 margin. 



The calice is shallow, and has rather a wide margin. 



The septa are very few, very distant, slender, and curved : their arrangement is very 



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