448" Mr. P. W. Bassett-Sraith on 



Genus PACHysERis, Ed. & H. 



Pachyseris levicolUs, Dana, sp. 



. 1848. Agaricia lavicollis, Dana, Expl. Exp. Zooph. p. 338, pi. ixii. 

 fig. 2. 



A fragment of a frond, living. 

 Macclesfield Bank, 26^ fath. 



Genus OxYPORA, Sav. Kent. 



Oxypora cont07'ta, Quelch. 



1887. Oxypora contorta, Quelcb, Chall. Rep. Reef-Corals, p. 129, pi. t. 

 fig. 2. 



Only some small fragments of a living specimen were 

 obtained. 



Macclesfield Bank, 26 fath. 



Genus Psammocoea, Dana. 



Psammocora planipora^ E. & H. 

 Psammocora plunipora, Ed. & H. Monogr. des Poritides, p. QS. 



The mode of branching and the thickness of the branches 

 differ from the description given of this species ; but the 

 structure of the calices and septa fairly correspond. 



Macclesfield Bank, depth 26 to 32 fathoms. 



Psammocora^ sp. 



The mode of branching and the thickness of the branches 

 correspond with the previous species, but the columella is 

 papillary, and it might therefore come within the definition of 

 Stephanaria^ Verrill ; but this character hardly seems to 

 possess a generic importance. This species seems to have 

 been confused with P. planipora^ and the diflPerences between 

 them are microscopic in character. 



Macclesfield Bank, 27 fath. 



Psammocora Haimeana, Ed. & H. 



Psammocora Hai7neana, Ed. & 11. Monogr. des Poritides. 

 1879. Psammocora Haimeana, Kluuzinger, Die Korallth. des rothen 

 Meeres, pt. iii. p. 81, pi. ix. fig. 5. 



The only specimen is incrusting and is apparently in its 

 early stages of growth. 



From the lagoon, Tizard Eecf, 6 fath. 



