56 



THE LIAS AMMONITES. 



At Cleeve, near Cheltenham, the same beds were formerly worked for brick-earth ; and 

 the finest specimens of Cardinia Listen, Sow., Hippopodium ponderosum, Sow., Ariefiies 

 raricostatus, Ziet., and Pleurotomaria similis. Sow., were obtained here. At Bredon 

 these beds were laid open in the railway-cutting, and yielded a rich series of the 

 characteristic fossils. In Warwickshire the railway-cutting at Honeybourne exposed the 

 same zone ; and here also the Coral-band contained a considerable number of Montli- 

 valtia rugosa, Wrt., and the Ammonite-bed its leading species. 



At Lyme Regis, in Dorsetshire, this zone is found near Black Venn, and some of 

 the beds contain a large quantity of pyrites, so much so that during the winter 

 months they are worked for that mineral, when their characteristic Ammonites are 

 collected in considerable numbers ; unfortunately most of the fossils are so much 

 charged with pyrites that they are preserved with difficulty. 



At Robin Hood's Bay, on the coast of Yorkshire, this zone is closely associated with 

 the Oxynotus^Q^% and cannot be separated from them ; it is seen resting on the under- 

 lying clays with Amaltheus oxynotus^ and is overlain by thick clays containing Aeyoceras 

 Jamesoni, Sow. In all these locaUties there appears to be an absence of limestone- 

 layers, the clay, more or less impregnated with iron in different stages of oxidation, 

 constitutes the entire beds. 



My friend Mr. E. C. H. Day, E.G.S., collected for me at the small bay of Ballintoy, 

 in the north of Ireland, a number of fossils from this zone. The box he kindly sent me 

 from that locality contained the following species : 



Cephalopoda. 



Arietites raricostatus, Ziet. 



— Nodotianus, d'Orb. = Macdonnelli, 

 Portlock. 

 Aegoceras subplanicosta, Oppel. 



Pleurotomaria similis, Sow. 



Aegoceras armatum densinodum, Quenst. 



— muticum, D'orb. 

 Belemnites acutus, Mill. 



— penicillatus, Sow. 



Gasteropoda. 



I Turritella Dunkeri, Terq. 



Lamellibranchiata. 



Gryphsea obliquata. Sow. 

 Plicatula spinosa, Sow. 

 Leda oxynoti, Quenst. 

 Pecten Hehlii, d'Orb. 

 — sequalis, Quenst. 



Waldheimia perforata, Piette. 



Hippopodium ponderosum. Sow. 

 Protocardia truncata, Sow. 

 Goniomya rhombifera, Quenst, 

 HoQiomya ventricosa, Agass, 



Brachiopoda. 



I Rhynchonella variabilis, Schloth. 



