BRITISH ZOOPHYTES. 307 



Genus II. Domopora, D'Orhigny. (From S6fj,o';, 

 a dwelling.) 



Zoarium massive, cylindrical or mammiform, simple 

 or lobed, formed of a number of subcolonies super- 

 imposed one upon the other ; the whole surface porous. 

 Zocecia disposed in radiatiag- lines, consisting of one 

 or more series, on the free extremity of the stem or 

 lobes.— T. H. 



1. D. STELLATA, GoldfuSS. 



Tubulipora truncata {Flem., G. J., D. L., De Bl.), 

 Coronopora truncata {Gray, Busk, Smitt), Defrancia 

 truncata (Sars, A. M. N.), Stellipora stellata (Ragenow), 

 Ceriopora stellata {Goldfuss) , Defrancia stellata [Reuss, 

 Manzoni, Bush), Domopora truncata (Busk). 



Hab. : Shetland [C. W. P., A. M. N.). 



This is a deep-water species. The zoarium is erect, 

 and bears a number of lobes on which the cells are 

 arranged in radiating rows. The cells are punctate, 

 and are arranged in 2 or 3 series. 



2. D. TRUNCATA, Jameson. 



Millepora truncata {Jameson), Tubulipora truncata 

 {G. J., in part). 



This also is a deep-water species obtained by Mr. 

 Peach and others from Shetland, and has often been 

 considered a form of the preceding. It grows erect to 

 the height of about \ inch. 



Sub-Ordee III.: CTENOSTOMATA. 

 FAMILY I. ALCYONIDIID^. 



Zooecia more or less closely united, immersed in an 

 expanded and adherent gelatinous crust, or forming an 

 erect cylindrical or compressed zoarium; orifice closed 



X 2 



