FAMILIES AND (JENERA OF THE MADEEPOBAEIA. 



125 



G-enus Lepidophyllia, Duncan, Brit. Foss. Corals, Pal. Soc. 



pt. iv. no. 2, p. 53 (1868). 

 Colony flat or tall, with corallites overlapping but joined by 

 their walls. Calicos more or less circular and deformed, widely 

 open. Columella absent. Septa dentate. Gemmation in the 

 centre of the calicos. Epitheca distinct. Endotheca present. 

 Distribution. — Fossil. Jurassic : England. 



Tribe II. 



Genus Aploccenia, Milne- Edwards Sf Jules Haime, Hist. Nat. 



des Gorall. vol. ii. p. 281, pi. D 3. fig. 1 (1857), more defined. 



Colony thin, with a convex surface. Corallites united by their 

 walls, and prismatic. Calicinal walls very thin, and in zigzags. 

 Calicos superficial, unequal, large. Axial space empty and small. 

 Septa thick, unequal, straight, smaller internally, entire ; systems 

 irregular. 



Distribution. — Fossil. Eocene : Europe. 



XII. Alliance LATIMiEANDROIDA. 

 Agglomerate Astraeidae, increasing by calicular gemmation. Calices 

 single or multiple, in valleys. Corallites united by their walls completely 

 or incompletely at the surface. Septa denticulate. Endotheca present. 

 Genus Latim^andra, Ed. & H. 

 Genus Hetkrogyra, Reuss. 



Genera absorbed : — Chorisastr^a, E. de From. ; Micro- 

 phyllia, d'Orb. ; Cormophyllia, d'Orb. 



Genus Latim^andra, Milne-Fdwards Sf Jules Uaime, Hist. 



Nat. des Corall. vol. ii. p. 543 (1857). 

 Syn. Jf^crop%ZZ^^^, d'Orb. ; Gormop7ii/llia,dL Orb. ; Chorisastr<^a, 

 E. de Erom. 



Colony massive, variable, convex, with a broad or narrow base, 

 or pedunculate or subturbinate, subplane, or subdendroid. 

 Corallites united by their walls, fusion not always perfect. 

 Calices some circumscribed, others in short series with their 

 centres distinct. Columella rudimentary. Septa numerous, thin, 

 close, laterally granulate ; dentations fine and subequal. Common 

 wall costulate, without epitheca. Endotheca scanty. Gemma- 

 tion calicinal and submarginal. 



Distribution. — Fossil. Trias, Jurassic : Europe and England. 

 Cretaceous, Eocene : Europe. Eocene : Sind, Asia, and Borneo. 

 Miocene: Sind. 



