FAMILIES AND aENERA OE THE MADEEPOKAEIA. 55 



Tribe I. With entire septa. 

 „ II. "With denticulate septa. 

 I. Genus Placosmilia, Ed. & H. 

 Genus Lophosmilia, Ed. & H. 



Subgenus Plesiosmilia, Milasch. 

 Genus Pleurosmilia, E. de From. 

 Genus Peplosmilia, Ed. & H. 

 Genus Blastosmilia, Etallon. 

 II. Genus Spenophylua, Moseley. 



Genera absorbed: — 



Phyllosmilia, E. de From. ; Oxysmilia, Duehass. 

 Trismilia, E. de From., a very interesting form, is placed here pro- 

 visionally. Lophosmilia becomes a subgenus. 



Tribe I. 



Grenus Placosmilia, Milne-F.clivards <Sf Jules Haime, Gompt.Bend. 

 de VAcad. des Sci. t. xxvii. p. 467 (1848), amended. 



Syn. Phyllosmilia, E. de From. 



Corallum simple, free, subpedicellate, compressed. Calice 

 elliptical, long or short. Columella lamellar. Septa numerous, 

 slightly exsert or not, entire, granular laterally. Costao well 

 developed or fine, simple or ramified, Endotheca abundant. 

 Exotheca variable, membranous, may be absent. 



Distrihution. — Fossil. Cretaceous: England, Europe. Eocene: 

 Europe. 



Grenus Lophosmilia, Milne-Edioards ^ Jules Uaime, Compt. 

 Bend, de VAcad. des Sci. t. xxvii. p. 467 (1848). 



Sya. Oxysmilia, Duehass. 



The corallum is simple, fixed, subturbinate, straight or curved. 

 Calice nearly circular, or slightly oval and elliptical ; fossa shal- 

 low. Columella lamellar, lobed more or less, or entire. Septa 

 entire, exsert, unequal, granulated on the sides. Costse distinct to 

 the base. Endotheca scanty. Epitheca absent or rudimentary. 



Distrilution. — Fossil. Cretaceous : Europe. — Recent. Carib- 

 bean Sea. 



Subgenus Plesiosmilia, (genus) Milaschewitsh, Falceonto- 

 graphica, vol. xxi. p. 189 (1876). 



Corallum simple, cylindro-conical, with circular accr.,Dion-ridges, 

 free or adherent. Calice circular, or slightly elliptical, deep 



