ASTRjEACEA. 
ANTHEADjE. 
THE OPELET. 
Anthea cereus. 
Plate V. fir/. 2 ; VI. fig. 9. 
Specific Character. Tentacles smooth, consimilar. 
Actinia cereus. Ellis and Solander, Zooph. 2. Rapp, Polyp. 56 ; 
pi. ii. fig. 8. Grube, Actin. 11. 
sulcata. Pennant, Brit. Zool. iv. 102. 
Anemonia edulis. Risso, L’Eur. M^rid. v. 289. 
Anthea cereus. Johnston, Brit. Zooph. Ed. 1, 221. Ibid, Ed. 2, 240; 
pi. xliv. Cocks, Rep. Cornw. Pol. Soc. 1851, 10; 
pi. ii. figs. 23, 27. Gosse, Man. Mar. Zool. L fig. 
37. Tugwell, Man. Sea-Anem. pi. vii. 
Anemonia sulcata. Milne-Edwards, Hist. Nat. Corail. i. 233 ; pi. C. i. 
fig. 1. 
GENERAL DESCRIPTION. 
Form. 
Base. Adherent to rocks, but with a very slight tenacity; dilated 
considerably beyond the medium diameter of the column; the outline 
generally undulate, often forming irregular lobes. 
Column. Shaped like a dice-box, or a pillar, which is much dilated 
above and below; when expanded, the diameter usually exceeding the 
height ; the margin greatly overlapping, crenate, with numerous rounded 
teeth, some of which are usually seen to be rising into incipient tentacles. 
Surface marked with numerous longitudinal furrows, which are correspond- 
ent with the insertions of the septa, and whose upper extremities alter- 
nate with the marginiil crenations. In the ordinary state of extension, 
there are also very numerous and minute transverse wrinkles, which cross 
the furrows at right angles. Skin imperforate, and destitute of any 
adherent power. Substance pulpy, or bladdery. 
Dish. Thin and membranous, greatly expanded in the form of a broad, 
shallow saucer, with the margin lax and undulate, often revolute. Radii 
strongly marked; two gonidial radii often more conspicuous than the 
others. 
