148 



PEOF. P. MAETIN DUNCAn's EEVISIOIT OE THE 



Genus Tuebinoseris, Duncan^ ^al. Soc, Supp. Brit. Foss. Corals, 

 Cretaceous Corals, pt. ii. p. 42 (1870); amended in Quart. 

 Journ. Geol. Soc. 1873, p. 558. 



Corallum simple, turbinate, or conical, compressed a little, with 

 a broad base, having a mark of former adhesion, or a narrow and 

 free base. Epitheca rudimentary or absent. Calice shallow, 

 usually elliptical. Septa numerous, solid, often uniting or not. 

 Columella absent. Costse well developed. Wall stout. Septa 

 united by synapticula, and sometimes the costsB also. 



Distribution. — Fossil. Lower Greensand : England. Eocene : 

 West Indies ; Sind, Asia. 



Subgenus Pal^oseeis, (genus) Duncan, Quart. Journ. Geol. Soc. 

 vol. xxvi. (1870), p. 301, pi. xx. fig. 7. 

 Corallum simple, turbinate, and pedicellate. Calice widely 

 open. Septa numerous, crowded, the smaller uniting with the 

 larger, which reach the central fossula. Columella rudimentary. 

 Synapticula numerous. Costse covered by a complete and dense 

 epitheca. 



Distribution. — Fossil. Cainozoic, probably Miocene : Australia. 

 The stout epitheca distinguishes this form from Tv/rbinoseris, of 

 which it is a subgenus. 



Genus Pheagmatoseeis, MilascJiewitscJi, ^^Kor alien der 

 Nattheimerschicht.,'^ Falceontograpliica, xxi. (1878), p. 212. 



Corallum simple, adherent, pedunculate, fan-shaped* Calice 

 elongate. Columella absent. Septa numerous, not exsert. 

 Synapticula exist low down in the interseptal loculi ; higher up 

 there are long, oval-outlined granules projecting from the septal 

 lamellse. Wall aporose, and furnished with costse which are con- 

 tinuous with the septa. 



Distribution. — Fossil. Jurassic : Europe. 



This genus is closely allied to Turbinoseris (if the septa are 

 imperforate). 



Genus Omphalophtllia, Laube, ^'Die Fauna der ScJiicTit. St. 

 Cassian^'' Denies, der Kais. Ahad. der Wiss. Wien, 1864, 

 Bd. xxiv. p. 251. 

 Syn. Cnemidium, Quenst. ; Montlivaltia, Lam. ; TTiecopJiyllia, 

 d'Orb. 



Corallum simple, adherent, turbinate, cylindrical or almost 



