44 PElMNOADiE. 



D. Poly]je-ceUs suhcylindrkal, reflexed, in a close cross series forming 

 rings round the stem and branches, covered with scales externally. 



10. Naeella. Coral furcately branched. 



11. Pkimnoella. Coral unbranched. 



E. Polype-cells short, ascending, scattered on sides of axis. 



12. Bebbyce. Coral furcately branched. 



A. Polype-cells ovate, peduncled, large, itt whorls or scattered on the 

 branches. 



66. PRIMNOA. 



Coral branched, tree-like ; branches cylindrical, forked. Bark 

 formed of scales. Polypiferoiis cells ovate, clavate, dependent, co- 

 vered with two series of large convex imbricate scales, placed in 

 whorls of three round the branches. Aperture closed with three 

 small pointed scales. The axis horny, black, solid, cyHndrical, the 

 base being often covered with a hard, calcareous, longitudinally 

 striated outer coat. 



" Calcareous bodies (spicula) generally scale-shape. The spicules of 

 the coenenchyma are small and scale-shape, and display a superficial 

 layer, under which there is a thick stratum of soft web. In place of 

 polype-cells the coenenchyma forms large basins or cups of the shape 

 of bent reeds, which in Primnoa lepadifera, which alone was more 

 closely examined by me (compare Grubein Abh. d. schles. Ges. 1861, 

 p. 170), membranous on the concave side, on the convex side are 

 covered with large imbricated overlapping scales. At the mouth of 

 the cup the scales form a ring and are eight in number, within 

 which, in the retracted polypes, there is a coniform outstanding lid, 

 which is formed out of eight long flat scales. Besides, the polypes 

 at the base of the branches possess eight rows of small calcareous 

 bodies (spicula), and indeed small outpressed double clubs covered 

 with small warts and spines, approaching to simple spicules." 



Primnoa, Iaddx. Bull. Soc. Phil. 1812, p. 188, Polyp. Flex. p. 441, Brit. 

 Zooph. p. 171; Milne-Edw. ^~ Haime, Coratl. i. p. 139; Graii, P. Z. S. 

 1857, p. 285, 1859, p. 483. 



143. Primnoa reseda. 



Coral alternately branched, diff'used ; bark with crowded, callous, 

 recurved calyces. 



Planta marina resedsB facie, Clus. Exot. 1. 6. c. 6. p. 123 ; Worm, Mus. 



p. 234. 

 Reseda marina, i^e*-/e/-, Mm. t. 24; Baster, Opusc. Subsec. p. 130, t. 13. 



f. 1 ; Pontopp. Nat. Hid. Nortv. i. p. 277, t. 13. n. 11. 

 Gorgonia reseda, Pallas, Zooph. p. 204. 

 Gorgonia lepadifera, Gmelin, Syd. Aat. p. 1289; Solamler 8f Ellis, 



Zooph. p. 84, t. 13. f. 1. 

 Primnoa lepadifera, Lamx. Bull. Soc. Phil. iii. p. 188 ; Kolliker, Ic. 



Hist. p. 135, t. 14. f. 7, t. 17. f. 10; Gray, P. Z. S. 1859, p. 483. 

 Primnoa reseda, Verrill, Mem. Boston Soc. Nat. Hid. i. p. 9. 



