184 



I think, therefore, there can be no doubt that the coral beds 

 in the zone of Ammonites Murchisonce in the Cotteswold Hills 

 are the true equivalents of the Calcaire a Polypiers of the 

 Cote-d'Or. Not only did the reef-building Anthozoa belong to 

 the same genera, but several of them are the identical species. 

 The corals in the lower reef are the following : — 



Montlivaltia Delabeclm, Ed. & Eaime. Isastrsea tenuistriata, Ed. & Haime. 



" tenuilamellosa " Thamnastrsea Defranciana, " 



Axosmilia "Wrightii " " Mettensis " 



Latomeandra Flemingii " " Mc Coyi " 



The middle coral bed is included in the oolite marl, which is 

 interstratified between the lower and upper freestones. This 

 bed at Trith, Leckhampton, Sheepscombe, Swift's Hill, and 

 others, contains masses of Tliamnastroea, Isastrcea, and Lato- 

 meandra, and large numbers of Terebratula fimbria, T. maxillata, 

 T. carinata, and Bhynchonella Lycetti. At Scar Hill, near 

 Nailsworth, it is charged with Nerincea and Chemnitzia, and 

 forms a persistent stratum in the middle and northern Cottes- 

 wolds, extending across this portion of the plateau fi-om the 

 vales of Moreton and Botirton on the east, to the escarpment 

 overlooking the Severn valley on the west, thinning out and 

 disappearing in the southern part of the range. 



The Galcaires a Terebratula PhilUpsii are the representative of 

 the middle division of the Inferior Oolite, or zone of Ammonites 

 Humphriesianus. This zone forms, in some regions, a well 

 marked sub-division, with a rich fauna special to it ; in other 

 localities it thins out or becomes blended with the higher beds. 

 The best types of this zone are the ferruginous Oolites of 

 Dundry, Yeovil, and Burton Bradstock, in England, and the 

 lower half of the Oolithe ferrugineuse of Bayeux, in France. 

 In the Cotteswold Hills it is well represented in the section 

 at Cleeve Hill^ a figure of which accompanied my paper on 

 that subject, and which I have reproduced here to estabhsh 

 the correlation of the strata now under consideration. 



This zone consists of the Brachiopoda, Roadstone, and Oyster 

 beds, Nos. 4, 5, 6. 



