32 



BRITISH FOSSIL CORALS 



Genus — Latim^andra. 

 Latim.'Eandra denticulata, Duncan. 



One or two calices of a Lathimandra occur in several of the hand-specimens in the 

 Collection of Charles Moore, Esq., F.G.S. The calices are long and are straight ; they 

 are separated by sharp walls, and the larger septa have a high paliforra tooth close to 

 their inner end. This structure of the septa distinguishes the species ; but as no very 

 satisfactory views can be obtained of a series of calices in the specimens, it has not been 

 thought worth while to have the incomplete structures drawn. 



LocaUti/. Brocastle. 



In the Collection of Charles Moore, Esq., F.G.S., Bath. 



Division — Faviace^. 

 Genus — Septastr^a. 

 Septastr.ea excavata, E. de Fromentel} PI. I, figs. 6, 7. 

 The corallum is rather tall and rounded. 



The coraUites are intimately united by their walls, which, although very thin, have a 

 slight line of separation between them. 



The calices are polygonal, irregular, and deep. 



The septa are thin, distant, and strongly dentate, especially near the centre, 

 Fissiparity occurs, and the longest calices may have three calicinal centres. 

 In simple calices there are from thirty-six to forty-two septa, which are unequal. 

 The hexameral type is very distinct. 



The diameter of simple calices is from f„ths to ^ths inch. 



In the specimens from Brocastle the abrupt rise of the septa near the calicular margin 

 is very well seen. The calices are very irregular, and the longitudinal sections show 

 constrictions and irregular swellings, which are very characteristic. Most of the calices 

 have forty-eight septa or more, especially those about to divide. 



Locality. Brocastle ; and Pont d'Aisy, Cote d'Or. 



In the Collection of Charles Moore, Esq., F.G.S. , Bath. 



^ Martin, op. cit., pi viii, figs. 1 — 5. 



