1872.] DR. J. E.GRAY ON ANTARCTIC CORALS. 745 



whorls round the branches, the cells oblong, cylindrical, contracted 

 at the base, and each covered with six longitudinal series of transverse 

 oblong hexangular scales, truncated at top and closed with elongated 

 more or less acute scales, converging to a point when the animal is 

 withdrawn ; axis covered with small scales. 



The artist compares a magnified figure of the polype-cells with the 

 cells of the Primnoa lepadifera (Plate LXII. fig. 4), to show the dif- 

 ference in the form of the scales with which the cells are covered and 

 closed, the latter being more unequal and blunt. 



Fannyella rossii. (Plate LXII. figs. 1-3). 

 Primnoa rossii, n. s., Stokes, ? MS. 



Hab. Antarctic Ocean (Ross). 



I have dedicated this genus to Mrs. Hooker, who took great in- 

 terest in the results of Captain Ross's Antarctic voyage. I have 

 named it in the same manner as Mr. Busk did Nellya and I Emmia, 

 after ladies who were both friends of Mrs. Hooker. 



Errina fissurata. (Plate LXII. figs, 5 & 6.) 



Coral subcylindrical, pale reddish brown, forked at the base, each 

 branch elongate ; one irregularly forked in the upper part, the other 

 with a brauch on the outer side, which appears to have been irregu- 

 larly forked on its upperside ; the apical branches subcylindrical, 

 rounded at the end ; cells mostly prominent, acute, with a central 

 slit on the outer side, and with some scattered larger circular pits, 

 without any raised edge, chiefly on the centre line of the branch. 



Madrepora fissurata, n. s., Stokes, ? MS. 



Hab. Antarctic Ocean (Ross). 



This figure is marked "J. S." in the same colour as the coral is 

 painted, doubtless the initials of the artist. The figure is about 

 4 inches long. 



Tubulipora nivalis. (Plate LXIII. figs. 4-7.) 



Coral branched ; branches ascending, repeatedly branched, with 

 a number of short lobes all on the upperside, white. 



Hab. Antarctic Ocean, growing on a pebble. 



Mr. Kent thinks this coral belongs to the genus Porina, and is 

 allied to the fossil species figured in D'Orbigny's ■ Paleontologie 

 Francaise : Terrains Cretaces,' plate 714. figs. 8-10. 



Captain Henry Toynbee, of the Meteorological Office, has brought 

 to the British Museum two corals which were obtained by Capt. James 

 Clark, R.N.R. (now Captain of the ship 'Western Empire'), when 

 dredging on a calm day off Burwood Bank, lat. 54° 27' S., long. 

 59° 40' W., in 45 fathoms, on the 1st January, 1872, consisting of 

 a fine specimen of Porella and a specimen of Thouarella ant- 

 arctica. Captain James Clark, through the kind intervention 

 of Captain Toynbee, has presented these beautiful specimens to the 

 British Museum. 



