194 E. F. TOMES ON THE STRATIGRAPHY OF THE 



fourths the length of the second, and those of the fourth only half 

 the length of the second. The fifth cycle is rudimentary. 



Ereadth | inch, height J inch. 



The spines on the margin of the septa have been broken off; but 

 their sides are ornamented with numerous minute papillae None of 

 the septa extend laterally beyond the margin of the wall. 



Besides Mr. Beesley's specimen, I have two ill-preserved frag- 

 ments from the same locality, which I have hitherto regarded as 

 examples of Montlivaltia radiata. 



Prom Mr. E. A. Walford, of Banbury, I have also received a 

 small collection of corals from the Middle and Upper Lias of the 

 neighbourhood, submitted to me for identification. They are as 

 follows : — 



1. THAMNASTRiEA EtHERIDGEI. 



A very perfect and beautiful specimen, having the calices so 

 regular as to have led to the error of attributing the species to the 

 genus Isastrcea ; but the columella, though not strongly developed, 

 is present, and the septa of contiguous calices are confluent, and 

 the corallum, though regularly convex superiorly, is more or less 

 foliaceous and creeping laterally. But the existence of synapticuke 

 furnishes the most decisive evidence. From the marlstone of King's 

 Sutton, Northamptonshire. 



2. Montlivaltia tuberculata. 



Three examples are forwarded by Mr. Walford, all from the same 

 locality, Adderbury. They do not furnish additional information, 

 excepting that, being all of one outward form and size, and similar 

 in these respects to all the other specimens from the same locality, 

 they may be taken as confirmatory of the full size and proportions 

 of the species. 



3. Thecocyathtjs Moorei? Edw. and Haime, Brit. Eoss. Cor. 



p. 144, pi. xxx. fig. 6. 



A single example, which has externally the appearance of this 

 species, has been obtained from the Upper Lias in the railway-cutting 

 at Eydon, nine miles north-east of Banbury, by Mr. Walford. Un- 

 fortunately, the calice is too much obscured to admit of an examina- 

 tion of the pali, which are very characteristic in this species. It 

 was associated with Ammonites Hollandrei, and was probably in the 

 lower part of the Upper Lias, whereas the Ilminster examples were 

 found by Mr. Moore in the upper part. 



In addition to the foregoing three species I have quite recently 

 been favoured with several specimens of Montlivaltia Guettardi from 

 the A.-Bucldandi zone of Eedcar ; and a careful comparison of 

 these with Montlivaltice collected by myself at Pebworth has con- 

 vinced me that they are specifically identical. 



