66 PEOE. p. MABTIN DUNCAn's REYISION OF THE 



Distribution. — Fossil. Cretaceous, Eocene, Miocene : Europe. 

 Eocene : Borneo. 



Liitken having found a recent species of Cladangia, states 

 that when it is young it resembles JRhizangia, and that tlie 

 stability of tbis last genus is lost. But it is necessary to com- 

 pare adult forms in zoological argument ; and the adults of the 

 two genera differ materially. 



G-enus Bathangia, Keferstein, quoted in Zittel, Sandh. der 

 FalcBont. 1879. 



Corallites sbort, united to a permanent basal enlargement. 

 Calicos round and very deep ; wall thick, covered witb a granular 

 folded epitheca. Columella spongy, well developed, filling the 

 lower part of the corallites. Septa narrow. Pali in one crown. 



Distribution. — Fossil. Oligocene : Europe. 



It is presumed that endotheca exists. Otherwise the genus 

 will belong to the Turbinolidce reptantes, nobis. 



II. AlUance ASTRANGIOIDA. 

 Astraeidse reptantes with" a naked and costulate wall. 

 Genus Astrangia, Ed. & H. 



Subgenus Ccenangia, Verrill. 

 Subgenus Phyllangia, Ed. & H. 

 Genus Ulangia, Ed. & H. 

 Genus Stylangia, Reuss. 

 Genus Colangia, Pourtales. 

 Genus Cladangia, Ed. & H. 

 Genus Latusastr^a, d'Orb. 



Genera absorbed :— - 



Hoplangia, Gosse ; Pleuroccenia, d'Orb. 

 Genera becoming subgenera : — 



Ccenangia and Phyllangia. 

 Genera removed : — 



PsAMMOPHORA, Placophora, Holangia, and Sty- 

 langia, E. de From. 



Genus Asteai^gia, llilne-Fdwards ^ Jules JSaime, Convpt. Fend, 

 de VAcad. des Sci. t. xxvii. p. 496 (1848). 

 Colony incrusting. Corallites short, arising from calcareous 

 basal expansions, close, more or less turbinate or cylindrical. 

 Calice circular, deep, and large. Columella papillary, and formed 

 of a network of trabeculse with additions from the septal ends ; 

 outer papillse resembling those of the septa, or differing in conse- 

 quence of a large paliform tooth being on some septa. Septa 



