ASTRJiACEA. 
BUNODIBjE. 
THE NECKLET. 
Hormathia Margaritce. 
Plate YIII. Fig. 1. 
Specific Character. White, with purple tentacles. 
Hoi'malhia Margaritce. Gosse, Annals Nat. Hist. Ser, 3, iiL 47. 
? Actinia nodosa. Fabkicius, Faun. Groenl. p. 350; No. 341. 
GENERAL DESCRIPTION. 
Form. 
Base. Very closely adherent to a living Fnsus antiquus; far exceeding 
the column, and clasping the shell. 
Col umn. Skin delicate, much coiTugated transversely ; below the margin 
a horizontal row of large well-defined warts, about ten in number ; summit 
extremely corrugated, and falling into radiating folds in incipient reti-acta- 
tion. A slight but distinct margin. 
Disk. Slightly concave ; outline almost circular. 
Tentacles. Arranged in two or three rows, rather long, sub-equal, but 
the inner row somewhat longer than the outer; when fully expanded, 
curving over the margin. 
Mouth. Not raised on a cone, slightly corrugated. 
Colour. 
Column. White. 
Disk. White, streaked with very light brown. 
Tentacles. Dark reddish purple, without any markings. 
Mouth. Lip slightly yellow. 
Size. 
Diameter two inches ; height two inches. 
LocALirr. 
Moray Firth, near Banff ; deep water. 
