TERTIARY CORALS. 47 



^^mio^—MADBEPOBABIA PERFORATA, 



Family — Madreporid(s. 



Sub-family— EUPSAMMINiE. 



Genus — Balanophyllia. 



Balanophyllia granulata, Duncan. Plate VII, figs. 1 — 5. 



The corallum is short, has a very large and encrusting base, and is constricted imme- 

 diately below the calice. There is no epitheca, and the costse are large and very 

 distinct.^ 



The calice is oval in outline, is compressed, and is marked by very small and equal 

 costse externally ; it has a small columella and very numerous septa. 



The septa are delicate, wavy, and granular ; there are six systems of them and five 

 complete cycles, with half of a sixth. 



Very large, equal, rather wavy, flat, and rounded costse are seen at the edge of the 

 base ; they bifurcate inferiorly^ here and there, and are profusely granular, as well as con- 

 nected by many cross bars. 



As the costse approach the constriction they diminish in size, become thinner, more 

 numerous, and less granular, until, close to the calicular margin, they are almost linear. 

 All are connected by the cross bars. The granules often are large enough to stand up 

 well in relief. 



Height of corallum i inch. Diameter of base l^rd inch. Diameter (greatest) of 

 calice -nith inch. 



Locality. — Brockenhurst. In the collection of Frederick Edwards, Esq., F.G.S. 



The genus Balanophyllia (Wood) has received mach attention since MM. Edwards 

 and Haime's ' Monograph on the British Fossil Corals' was written. These authors have 

 described in the ' Histoire Naturelle des Coralliaires' (vol. 3) some new species. 



Since that work was completed Reuss has described three species from the " lower 

 marine sand" of Weinheim : and F. Roemer and Philippi have each discovered a new 

 species in the fossiliferous beds of Latdorf. Moreover, the South Austrahan Tertiary beds 

 contain species. 



The Balanophyllia calycuhis, Wood ; B. verrucaria, Pallas, sp. ; B. cylindrica, Miche- 

 lotti, sp. ; B. Italica, Michelin, sp. ; B. tenuistriata, Ed. and H. ; B. desmophyllum, Lons- 



' Plate VII, figs. 1, 2. 2 piate VII, figs. 2, 3. 



