94 PEOE. p. MAETiN Duncan's REYisioisr or the 



Grenus Ulophyllia, Milne-Edwards Sf Jules Saime, Hist. Nat. 

 des Corall. vol. ii. p. 377 (1857). 



Syn. Oulopliyllia, Ed. & H. 



Colony massiye, convex, low, or subplane above. Corallites 

 united by their walls completely, and presenting narrow ridges 

 between the long sinuous valleys of the calices, which are not very 

 distinct. Columella spongy and slightly developed. Septa close, 

 slightly exsert, granulated laterally, and deeply incised at the edge 

 with long sharp dentations, which are largest near the columella. 

 The endotheca is well developed, and the interseptal loculi are 

 deep. The common wall has a more or less complete epitheca. 



Distribution. — Fossil. Jurassic, Cretaceous, Eocene, and Mio- 

 cene : Europe. — Hecent. Indian Ocean, Banda. 



Genus Teidacophtllta, JBlainville, Diet, des Sci. Nat. 

 t. Ix. p. 327 (1830). 



Colony tall, structures exceedingly thin. Corallites completely 

 united by their very thin and often incomplete walls. Calicinal 

 valleys subsinuous, long, broad, and very deep, separated by very 

 thin, tall, irregular ridges. Calicinal centres fairly distinct. Co- 

 lumella absent or very rudimentary. Septa very narrow above, 

 slightly exsert, not close, subequal, and dentated. The dentations 

 are delicate, ascending and subequal ; those near the centre of the 

 calices are the largest. Common wall broken or festooned where 

 free, with distinct, slightly projecting sinuous and spinose costge. 

 Dissepiments very oblique, convex, abundant, forming large 

 vesicles ; but the interseptal loculi are rather shallow. 



Distrihution. — decent. American seas, Indian Ocean, Amboyna, 

 Banda, China, Pacific. 



Genus Colpophtllia, Milne-Fdioards 4" Jules Saime, Hist. Nat. 

 des Corall. vol. ii. p. 383 (1857). 



Colony massive, light and fragile, with a broad base, or pedun- 

 culate. Corallites united by their costse, the walls never fusing 

 at the caHcular surface, where they are very slender. Calicinal 

 valleys moderately long, flexuous, large, deep, with the calicinal 

 centres more or less distinct. Columella rudimentary or none. 

 Septa excessively thin, long, slightly exsert, and striated laterally ; 

 their free margin is delicately toothed and slightly excised near 

 the middle. The common plateau has small lamellar costae, broken 

 up by dentations which are horizontal. 



Distrihution. — Recent. Caribbean Sea. 



