186 E. F. TOMES ON THE STEATIGBAPHr OF THE 



the Lias formation." Just twenty year3 after, in 1861, I visited the 

 spot, and found in a clay bank of about 3 feet an irregular stony 

 layer, in which were pieces of a long branching coral in abundance. 

 Every fragment of stone contained ill-preserved pieces of what I then 

 believed to be a CJadophyllia. Broken-up branches were equally 

 numerous in the clay itself; but none of them were more than casts. 

 The few small fragments which show any structure have a low 

 septal number ; and most likely the species is identical with Thz- 

 cosmilia Mirfielini. The presence of Ammonites angidatus with 

 these corals leaves no doubt as to their position in the Lias. 



Thecosmilia Maetini,E. de From, in Paleont. Stratigr. de l'lnfra-Lias 

 de la Cote-d'or, par Jules Martin, Mem. Soc. Greol. Fr. 2 e ser. 

 tome vii. p. 92, pi. viii. 



At Down Hatherley, Gloucestershire, Mr. Brodie found a species 

 of Thecosmilia which I have little hesitation, after the examination 

 of a considerable number of specimens, in referring to the above 

 species. In the figure given by De Fromentel the septa meet in the 

 centre ; and in this respect the Down-Hatherley coral more nearly 

 resembles the French than the English examples figured by Dr. 

 Duncan. It was found associated with a globular Isastrcea and the 

 following mollusca — " Cardinia ovcdis, Lima gigantea, Modiola, 

 Astarte consobrina, and many univalves." 



Montltvaltia Rtjpeeti, Duncan, Supp. Brit. Foss. Cor. pt. iv. No. 

 2, p. 46, pi. xii. figs. 3, 4, 5, pi. xv. fig. 15. 



The specimens from which Dr. Duncan took his description were 

 all collected by Mr. Brodie at Down Hatherley, but were not 

 associated with the Isastrcea and Thecosmilia. He says, " I found 

 the last, M. Raperti, when the new school was being built at Down 

 Hatherley, near the Yicarage, really at a lower level than the spot 

 where I found the Thecosmilia and Isastrcea, and also in the brook 

 below, still lower down as regards level, though stratigraphically 

 higher, owing to a slight dip of the beds and partial upthrow." 

 The only associated fossil mentioned by Mr. Brodie is Cardinia 

 crassiuscida, 



Montlivaltia patuxa, Duncan, Supp. Brit. Foss. Cor. pt. iv. No. 2, 

 p. &Q, pi. xv. figs. 6, 7, 8. 



The zone in which this species occurs, near my former residence 

 at Welford Hill, is a remarkably restricted one. It is at the top 

 of the bed containing Ammonites semicostatus and A. Sauzeanus, which 

 is not there more than six inches in thickness. All the examples 

 found were in a thin intermittent band of stone, ragged with the 

 number of shells which it contained. A few feet higher up the 

 hill-side Ammonites BircJiii, A. BrooJcii, and A. planico status appear. 



At Pebworth, about three miles to the south-west, I found some 

 Jlontlivaltice which Dr. Duncan considered identical with Mont- 

 Uvaltia mucronata , observing, however, that they had grown under 



