REPORT ON THE ALCYONARIA. Ixiii 



7. Gorgonia, Linneus, emend. Verrill, Amer. Journ. Sci. and Arts, vol. xlviii. p. 424, 



1869. 



Rhipidogorgia (pars), Verrill, loc. cit. 



Pterogorgia, Verrill, Trans. Connect. Acad., vol. i. p. 386, 1869. 



The colony is branched, but varies greatly in form, sometimes with anastomosing 

 branches, sometimes plume-shaped. The polyps project more or less, and are disposed in 

 two rows on either side of the branches and twigs. The coenenchyma contains spindles 

 and scaphoid spicules. 



8. Eugorgia, Verrdl, Amer. Journ. Sci. and Arts, vol. xlv. p. 414, 1868 ; Trans. 



Connect. Acad., vol. i. p. 406, 1869. 



The colonies are branched, branches compressed or cylindrical. The polyps with or 

 without verrucse. They are chiefly grouped on either side of the branches. In the 

 coenenchyma there are minute, warty, double spindles and double wheels; in the calyces 

 there are small, slender spicules. 



9. Danielssenia, Grieg, Bergens Museums Aarsberetnjng for 1886 ; Bidrag til de 



Norskc Alcyonarier, p. 8, pi. iii. fig. 33, iv. vi. 



Colony unbranched ; base adherent ; axis horny, cylindrical. Polyps in a single row 

 on both sides of the stem ; polyps with low, broad enlarged bases. Coenenchyma some- 

 what thick ; spicules, spindles, clubs and double stars. 



10. Xiphigorgia, Milne-Edwards, Hist. Nat. des Coralliaires, t. i. p. 171. 



Gorgonia, Div. E, Verrill, Amer. Journ. Sci. and Arts, vol. xlviii. p. 425. 



The colony is more or less ramified ; the axis is horny; the stem is cylindrical, but 

 the branches are much compressed, forming at either edge small wing-like longitudinal 

 ridges, which are formed from the coenenchyma and bear the polyp openings disposed 

 in rows. The smaller longitudinal canals run peripherally along the axis ; a large, 

 broad canal lies within each of the wing-like expansions. The spicules are like those in 

 Gorgonia. 



11. Hymenogorgia, Valenciennes, Conlptes rendus, t. xli. p. 13 ; Milne-Edwards, 



Hist. Nat. des Coralliaires, t. i. p. 181. 



Incl. Phyllogorgia, Milne Edw. and Haime, Brit. Foss. Corals, Introd., pi. Ixxx., 1850; Milne- 

 Edwards, Hist. Nat. des Coralliaires, t. L p. 180. 

 Gorgonia, Div. F and G, Verrill, Amer. Journ. Sci. and Arts, vol. xlviii. p. 425. 



An upright colony with a horny axis ramified in one plane. The branches some- 



