42 PEOF. p. MARTIN DFNCAN'S EETISION OF THE 



Europe and America. — Becent. Indian Ocean, Pacific (?), Florida 

 and Caribbean seas, Bermudas. 



The Eev. Tenniaon Woods founded a new genus, Platyhelia, 

 for Oculinacea witli the usual compact dermic tissue and with 

 pali, but spreading and incrusting instead of growing in a ramose 

 tuft (Palaeont. New Zealand, Corals and Bryozoa, p. 15, 1880). 



There is one specimen of a species only, and it is so probable 

 that further research will relegate the form to the genus Oculina 

 that it is recorded here but not formally placed. The bases of 

 some pali-bearing Oculinacea spread out and incrust before the 

 upward growth occurs. 



Subgenus Agathelia, (genus) JReuss, ^^ Beitrdge zur Char, der 

 Kreid. in den Ostalpen'^ 1854, Denies, der Kais. AJcad. der 

 Wiss. Wien, p. 82. 



Colony covering some space, gibbous and lamellar, with the coral- 

 lites widely and unsymmetrically scattered. Coenenchyma compact 

 and granalar at the surface and noncostulate. Calicos conical, 

 projecting, deep. Septa thin, unequal, denticulate, barely exsert. 

 Columella of very delicate trabeculge (Stabchen). Pali before 

 the first two cycles out of the three. 



Distribution. — Fossil. Cretaceous : Europe. 



Grenus Ctathohelia, Milne-Bdtoards Sf Jules Saime, Comptes 

 Bendus de VAcad. des Sci. t. xxix. p. 68 (1849), amended. 



Colony dendroid, like a dichotomous cyme. Corallites free 

 to a considerable extent except on the side, whence they bud, 

 subturbinate or subcylindrical. Parent corallites compressed 

 between the bases of the buds. Calices elliptical, shallow, com- 

 pressed laterally. Columella well developed, papillose, elongate 

 rather. Septa subentire, numerous, exsert. Pali large, distinct, 

 higher than the columella, in two crowns, the outer in front of 

 the tertiaries, absent before the last cycle of septa. Costaa 

 visible near the calicular margins only. Surface of the greatly 

 thickened walls granular. Gremmation opposite. 



Distribution. — Becent. Japanese and Corean seas, Moluccas, 

 to 825 fms. 



Genus Stnhelia, Milne-Edwards Sf Jules Haime, Hist. Nat. des 

 Gorall. vii. p. 113 (1857), amended. 

 Colony dendroid, gibbous on the surface. Calices irregular 



