220 BRITISH FOSSIL CORALS. 



terminated by an irregular or subgibbose surface. Calices very oblique, closely set (but 

 unequally so), elongated transversely, subtriangular, and turned towards the edge of the 

 corallum. The outer or under side of these calices bears interiorly a small elongated 

 ridge, which appears to represent a septum, and is placed opposite to a small notch. 

 Transverse diameter of the calices about two fifths of a line ; small diameter about half 

 that length. 



Found in the Devonian deposits of Torquay, Tor Abbey, Babbacombe, Teignmouth, 

 and, according to M. Phillips, at Hope. 



Specimens are in the collections of the Geological Society, Messrs. Battersby and 

 Pengelly at Torquay. 



Alveolites LabecheP is a massive subgibbose species, very nearly allied to the above- 

 described coral, but difiers from it by the interior dentation of the calicular edge being 

 but slightly developed, and by the calices being more irregular in size. In A. Battersbyv' 

 the septum represented by this interior expansion is, on the contrary, formed by very 

 strong spiniform processes, and the mural pores are very large. 



In A. compressed the calices are much more irregular, and the inner processes are 

 very small. 



The other species of this genus are not massive. 



2. Alveolites Battersbyi. Tab. XLIX, figs. 2, 2«. 



Alveolites Battersbyt, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 



p. 257, 1851. 



Corallum forming a subspherical mass. Calices unequal in size, and somewhat 

 irregular. Vertical and horizontal sections show that the ivalls are thin, and perforated 

 by large circular pores rather closely set, and that in different places they give rise to 

 strong ascending spiniform processes, which, by their superposition, represent unpaired 

 septa. Tabulce very thin and irregular. 



Found at Torquay. Specimens are in the collections of Dr. Battersby and of 

 Mr. Pengelly. 



This species is remarkable for the slight obliquity of its calices, the large size of its 

 mural pores, and more especially for the great development of its septal processes. 



3. Alveolites vermicularis. Tab. XLVIII, figs. 5, ba. 



Alveolites vermicularis, M'Coij, Ann. and Mag. of Nat. Hist., 2d ser., vol. vi, p. 377, 1830. 

 — — M'Coy, Brit. Palseoz. Foss., p. 69, 1851. 



Corallum dendroid, with slender, cylindrical coalescent branches that bifurcate at 



. ' Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., p. 257. 

 2 Tab. Ixix, fig. 2. a Tab. xlix, fig. 3. 



