IV 



Sarcophyton purpureum, n. sp. 



Tab. IV, figs. 1—25. 



Specific Character. 



The zoanthodeme 55 mm. high. has the form of a mushroom, The stem, 45 mm. high, 70 mm. in circumference at the 

 base, 100 mm. under the pileus. The latter is 65 mm, broad, 125 mm. in circumference. The basal part expanded as a disk, firm, 

 coriaceous, abounding in calcareous deposit. The stem, round, is gradually dilated towards the pileus, has a firm, coriaceous 

 skin, the upper two-thirds are densely beset with zooids and have a rough feel from the calcareous deposit. On the uppermost 

 end of the stem occur a few exceedingly small, young polyps. The pileus, convexed, carries about 35 large polyps, irregularly 

 situated round uponit; between the polyps, thickly set zooids, forming small tubercles, and thus the skin acquires the appearance 

 of red chagreen. The polyps completely retractile, cylindrical. Body 12 mm. long, 5 mm. broad; tentacles 8 mm. long, 

 pointed, with a broad base and thick pinnules. Polyp-body, tentacles and pinnules abounding in vinous-red spicules. The 

 mouth forms a transverse fissure, with thick lips. Polyp-cell elongate, located in the coenenchym, not projecting over the surface. 

 Colour: purple; the adorai surface of the tentacles yellowis-hwhite. 



Gersemia candida, n. sp. 



Tab. V, figs. 1 — 15. 



Specific Character. 



The trunk from 25 to 30 mm, high, 3 mm. broad, somewhat compressed, grooved lengthwise, and abundantly pro- 

 vided with branches, bearing polyps. Between the branches are seen here and there a few long polyps, The polyps cylin- 

 drical in form, 7 mm. long, non-retractile, with the anterior part of the body somewhat broad, and having 8 longitudinal ribs, 

 as also abundantly furnished with calcareous deposits. The tentacles long, having on their aboral surface peculiar spicules, in 

 the form of palmate, or thorny clubs. The tentacular pinnules long, without spicules. Colour verging on red. 



Clavularia borealis, n. sp. 



Tab. V, figs. 16 — 30. 



Specific Character. 



The zoanthodeme constituting closely disposed groups of polyps. The basal part stolon-like, membranaceous ex- 

 panded. The polyps isolated, but, in some cases, united, two and two, on the outer surface of the basal part. They are 



