108 ME. L. M. PAESOXS 02^ THE CAEBOXIFEEOUS [vol. IxXlii, 



3. A Avell-marked cardinal septum. 



4. The development of short minor septa through the zone of 



vesicles. 



5. The tendency to form an inner wall consisting of arcs proceeding 



from septum to septum. 



A comparison of fig. 2 of the Burrington Combe paper with the 

 cross-section (PI. X. fig. 6 of tliis paper), Avill indicate the 

 similarit}^ between the fossulse and tabulie of the two types, — that 

 obtained from the Caiiinia horizon of the Mendip area and that 

 from the D,-D, beds of Ticknall. 



DiPHVPHYLLUM, near coNCixxuM Lonsdale, large form. 



A very large form of Dipht/jjhyllum, measuring 18 mm. across 

 the calyx, occm-s somewhat sparingly at Breedon Cloud. It is 

 usually obtained in an incomplete form, the central area being 

 absent ; but Mr. R. Wood has collected one or two specimens in 

 which the tabulae and discontinuous columella are preserved. It 

 is compound cylindrical usualh> though sometimes a polygonal 

 habit is developed. On account of this latter characteristic and 

 the absence of the central area, tliis species has previously been 

 assigned to Lonsdalia floriformis ; but, owing to the kindness 

 of Dr. Stanley Smith who examined the material, I am able to 

 state that no specimen of Lonsdalia occurs at Breedon Cloud. 



The nearest Lithostrofion equivalent to this large form of 

 Dipliijphi/Jlum appears to be L. ctffine. Specmiens of Dipliy- 

 phyUum concinniim with polygonal habit also occur in the highest 

 beds on the western side of Breedon-on-the-Hill. 



SXETXGOPOEA GIGAXTEA TllOmsOU. 



A large Syrinc/opora^ the corallites of which are about 4 mm. in 

 diameter, has been found at Breedon Cloud. In its general 

 characters this species approximates to the large form described by 

 James Thomson in the Proceedings of the Glasgow Philosophical 

 Society.^ The species is of very rare occurrence in England, 

 and it is interesting to note that specimens have been found in 

 Dovedale in the south-western ])art of the Midland area. 



IX. Note ox the Toxge Boeixg. 



A boring made at Tonge in Leicestershire yielded results which 

 appear to indicate that — 



(1) The throAv of the Breedon Fault may be at least SOU feet ; 



(2) The Keuper at that locality is about 279 feet thick ; 



(3) The Millstone Grit was either poorly developed or much 



eroded before the deposition of the Trias ; 



(4) The ' Pendleside ' Shales died out somewhere between Tonge 



and Breedon, so that the Millstone Grit is locally uncon- 

 formable upon the Cai'lioniferous Limestone. 



> Vol. xiv (1883) p. 329. 



