188 



NATUEAL HISTORY OP 



FAMILY III. ASTRyEID^. 

 Sub-family Aste(eid^ eeptantes. 



Corallum solid, composed of short coralUtes, arising 

 hy gemmation on stolons, or on basal memhraniferous 

 expansions. 



Genus Phyllangia, 3Iilne-Edivards and Haime. 



CoralUtes shorty increasing as described. Bibs thin, 

 indistinct. Columella with, a surface of papillae. No 

 palules. — GossE. 



1. P. DUEOTRix, Gosse. "The Weymouth Carpet 

 Coral." 



Phyllangia Americana [P.H. O.), Hoplangia duro- 

 trix (P. H. G.). 



Hab. : Weymouth Bay. Height \ in. 



Animal undescribed. 



This is a small but interesting coral. The corallites 

 are grouped on stolons or membranous expansions. 

 The plates are in 6 systems and 4 imperfect cycles. 

 Mr. Gosse describes the wall as surrounded by a thin, 

 porcellaneous coat [epitheca), which he considers a 

 prominent feature of the species. 



Section II. Perforata. Corallum composed almost 

 entirely of porous or reticular ccenenchyma. 



FAMILY I. EUPSAMMIDyE. 



Corallum simple, porous. Wall perforate. Septal 

 arrangement like a six- or twelve-rayed star. Plates 

 perforate. 



Genus Balanophyllia, Wood. 

 Corallum simple, adherent, cylindrical. Well-deve- 

 loped columella of a sponge-like appearance. 



