CA E YOPE YLLIA CEA . 
ANTUID^. 
THE SANDY CREEPLET. 
Zoanthus Gouchii. 
Plate IX. Flr/s. 9, 10 ; X. Fig. 5. 
Specific Character. Basal band extending variously ; polypes invested 
with a sandy coating ; tentacles in two rows. 
Zoanthus Couchii. Johnston, Brit. Zooph. Ed. 2, i. 202 ; pi. xxxv. fig. 9. 
Couch, Corn. Faun. iii. 73 ; pi. xv. fig. 3. Holds- 
WORTH, Proc. Zool. Soc. 1858 ; pi. x. figs. 3 — 7. 
Dgsidea (fi) papillosa. Johnston, Brit. Sponges, 190, fig. 18; pi. xvi. 
figs. 6, 7. 
Sidisia Barleei. J. E. Gray, Ann. N. H. Ser. 3, ii. 489 ; Proc. Zool. 
Soc. 1858 ; pi. x. fig. 8. 
GENERAL DESCRIPTION. 
Form. 
Basal hand. Narrow, irregularly creeping, soft, elastic, fleshy to the 
feel, very sensitive ; invested with sand, like the column. 
Column. Cylindrical, rising to about three or four times its diameter ; 
smooth, transparent. Margin cut into twelve or fourteen (generally the 
latter number) large fleshy triangular teeth, which are connected by a thin 
web of transparent membrane, the inner layer of which is composed of 
transverse fibres, the outer is gianular and cutaneous. In a state of semi- 
contraction, these teeth form strongly-marked converging ridges on the 
flat summit of the column. 
Investment. Fine sand, evidently not a secretion, but extraneous, imbedded 
in the epidermis, — the fragments (in Torquay specimens) being of different 
colours, some being of white limestone, others of red sandstone. When 
the column is much distended, the grains of sand become considerably 
separated, and we can distinctly see through the transparent and smooth 
integuments into the visceral cavity. Thus the sand forms manifestly 
only a single layer. Only very minute grains are used, and there is very 
little diSerence in their size. 
Dish. Generally flat or slightly concave, but protrusile in a conical 
form. Radii apparently distinct, but only because the upper edges of the 
septa appear through the perfectly transparent disk. 
