CORALS FROM THE DEVONIAN FORMATION. 221 



almost right angles. A vertical section shows that the corallites diverge from the centre 

 towards the surface of the branches in an oblique ascendant direction, are somewhat 

 fiexuous, and terminate by a cahcular margin that is prominent at its under part. The 

 walls are thick. In some places the tabula appear closely set, but in most parts of the 

 specimen submitted to our investigation they were completely destroyed. The indications 

 of the mural pores were also obscure. Diameter of the branches about 1^ line, that of the 

 calices about J-th of a line. 



This Coral was found at Torquay by Dr. Battersby, and is known to us only by a 

 polished specimen belonging to the collection of that pala?ontologist. We at first thought 

 that it might be referred to the Ceriopora Goldfussi of Michelin, but Professor M'Coy, 

 who appears to have had some better preserved specimens, has since that recognized the 

 existence of triangular calices and a fissiparous mode of multiplication. He therefore 

 places this fossil in the genus Alveolites, and after more ample investigation we have been 

 led to adopt his opinion. Professor M'Coy adds that Alveolites Vermicidaris is poly- 

 morphous and is met with at Teignmouth, at Newquay, and at Bedruthen Steps, 

 St. Eual. 



Alveolites compressa. Tab. XLIX, fig. 3. 



Corallum massive. Calices arranged in a circular manner round divers places on the 

 surface of the corallum, compressed, elongated, and very unequal in size, the larger ones 

 being about half a line across. Walls thick exteriorly, and convex. The three septal 

 processes somewhat unequally developed ; short, but quite distinct. 



This species resembles Alveolites orhiculari^ by its general appearance, but differs 

 from it by the calices being much more unequal in size, arranged in circular hnes, and 

 provided with three septal processes that do not difi'er in size. 



Found at Torquay by Mr. Pengelly. 



Family PORITID^, (p. Iv.) 



The singular fossil coral to which Goldfuss gave the name of Fleurodictyum pro- 

 bleviaticuw? has been met with in the Meadsfoot Sands near Torquay, by Prof. Philhps;^ 

 but we have not as yet seen any British specimen of that species, and we must therefore 

 refrain from describing it here. We hope to be able to have it figured in an appendix to 

 our Monograph. 



1 Tab. xlix, fig. 1. 



2 Petref. Germ., vol. i, p. 113, pi. xxxviii, fig. 18. See also our Monographie des Polypiers Fossiles 

 des Terrains Palseozoiques, p. 210, pi. xviii, figs. 3, 4, 5, 6. 



' Palaeozoic Fossils, p. 19, pi. xix, fig. 24. 



