REPORT ON THE ALCYONARIA. Iv 



13. Menacdla, Gray, Ann. and IMag. Nat. Hist., .ser. 4, vol. v. p. 406 ; emend. 

 Ridley, Ann. and Mag. Nat. Hist., ser. 5, vol. x. p. 191, 1882. 



The colony is in habit like the preceding. The spicules are simple warty spindles 

 with many tuberculated warts. 



14. Heterogorgia, Verrill, Amer. Journ. Sci. and Arts, vol. xlv. p. 413, 1868. 



The colony is branched. The cojnenchyma is thin, with a smooth or finely granular 

 surface. The small spicules occur as rough, warty, short spindles, clubs, double-clubs, 

 double-stars, crosses or irregular forms. The polyp calyces are rounded warts with a 

 marginal fringe of long sharp spindles projecting around the oral region. 



15. Astrogorgia, Verrill, Amer. Journ. Sci. and Arts, vol. xlv. p. 413, 1868. 



The colony is branched, with irregularly distributed projecting polyp calyces, on 

 which the spicules occur in eight longitudinal rows. There is a well-marked tentacular 

 operculum. The spicules are small spindles with double and simple clubs. 



1 6. Bebryce, Philippi, Archiv f. Naturgesch., Bd. i. p. 35, 1842; KoUiker, Icones histio- 



logicse, pt. ii. p. 137 ; v. Koch, Fauna und Flora d. Golfes v. Neapel., xv. 

 1887, p. 54. 

 The colony is branched, with a very thin ccBnenchyma, and relatively high, sub- 

 cylindrical calyces, which are alternately arranged on the axis. The spicules of the 

 (icenenchyma form externally a layer of scales which exhibit more or less dentate or 

 irregular margins, one or more, longer or shorter, warty processes being given oflf from 

 each centre. Beneath these, there is a layer of warty irregular spindles including tri- 

 and hexradiate forms. Spicules of the same shapes are found in the polyp calyces. 



17. Acamptogorgia, n. gen. 



Periswles, Wright and Studer, Archiv f. Naturgesch., Jahrg. liii. Bil. i. p. 57 (name already in 

 use for a Coleopteron). 



The colony is branched, with tubular, cylindrical, short polyp calyces, which are 

 u.sually given off alternately from each side of the axis. The spicules are foliaceous 

 clubs, the folia project beyond the ccenenchyma, but the triradiate bases are embedded 

 in the ccenenchyma. In must cases bidentate folia, at right angles to one another, 

 originate from a tripartite base. Besides these there are also warty curved spindles and 

 clubs. The tentacular opercula are well developed. 



