162 



THE LIAS AMMONITES. 



ECHINODERMATA. 



Pseudodiarlema depressum, Agass. 

 Cidaris Fowlevi, Wright. 



— Bouchardii, Wright. 



— Wrightii, Desor. 

 Diplocidaris D sori, Wright. 



— Wrightii, Desor. 



Stomechinus germinans, Phillips. 

 Acrosalenia Lycetti, Wright. 

 Hemipedina Bakerise, Wright. 



Hemipedina perforata, Wright. 



— tetragratnma, Wright. 



— Waterhousei, Wright. 

 Polycyphus Deslongcha,mp8ii, H'righl. 

 Pygaster semisulcatus, Phillips. 



— conoideus, Wright. 

 Galeropygus agariciformis, Forbes. 

 Goniaster obtusus, Wright. 

 Pentacrinus Austenii, Wright. 



Anthozoa. 



Latomseandra Flemingii, Edw. Sf Haime. 

 — Davidsonii, Edw. Sf Haime. 



Axosmilia Wrightii, Edw. Sf Haime. 

 Thamnastraea Terquemi, Edw. Sf Haime. 



Thamnastrsea Mettensis, Edw. Sf Haime. 



— Defranciana, Edw. S[ Haime. 



■ — • fungifortnis, Edw. Sf Haime. 



Isastrsea tenuistriata, Edw. Sf Haime. 



No. 22. The Coarse Ferruginous Oolite is composed of large oolitic grains of 

 calcic carbonate, having incorporated therewith a. considerable percentage of the 

 ferric oxide. This rock has a fine rich brown colour, and when exposed in the 

 escarpment,, and lit by the sun's rays, it imparts a warm colouring to the surrounding 

 landscape, varying in its tones from one hour to another. I know of no part of the 

 Cotteswold range which exhibits more picturesque effects and play of colour than the 

 bold naked escarpment of Cleeve Hill, and to which the beds forming this portion of the 

 section so largely contribute by their deep rich tints. The rock is of little value as a 

 road-stone, because it is readily disintegrated by rain and frost ; it might have some 

 economic value for the Iron it contains, if the percentage of that mineral were sufficiently 

 large to be remunerative, but no quantitative analysis has yet been made to ascertain its 

 proportions. I have found few fossils in this bed at Cleeve. Belemnites and Pholo- 

 domyse are occasionally met with. 



No. 23. The Upper Liassic Sands or zone of Lytoceras Jurense so well developed at 

 Cooper's Hill, Haresfield Beacon, Nailsworth, the Long Wood near Erocester, Uley 

 Bury, Stinchcombe, the hills around Dursley, and at Nibley, Wotton-under-Edge, 

 Ozleworth, and all along the chain of the southern Cotteswolds as far as Bath, are only 

 feebly represented at Cleeve. These Sands afford an example of that thinning-out 

 process which is seen to a greater or less extent in all the other beds in our section, if 

 traced in certain directions from the point where they attain their maximum develop- 

 ment. As a general rule it may be stated that all the Inferior-Oolitic rocks thin out 

 from their western escarpment in the Cotteswolds when traced eastwards, and that the 

 Liassic Sand or Jurense zone gradually thickens when traced from the northern to the 

 southern part of the chain. 



