A STB. ACE A. 
SAGABTIAD.cE. 
THE WALLED COEKLET. 
FhelUa murocincta. 
Plate VII. Jig. 2 ; XII. Jig. 8 (magn.). 
Specijic Charade)’. Epidermis dense; free and tiibe-like at the summit; 
its surface not warted, 
Phellia murocincta. Go.sse, AnnaLs N. H. Ser. 3. ii, 193. 
GENERAL DESCRIPTION. 
Form, 
Base. Adherent to rocks ; slightly exceeding column. 
Column. Cylindi’ical, pillar-like when expanded, slightly grooved longi- 
tudinally, smooth, but partly clothed with a dense, rough, membranous 
skin, which is firmly adherent from the base about half-way up, but there 
becomes free, forming a loose firm sheath or tube, from which the animal 
l^rotiTides its fore parts in extension, and into which it I’etii’es at will, more 
or less completely. Surface of epidermis rough, but not warted. Height, 
in full extension, double the diameter. 
Disk. A deep cup, bounded by the thick feet of the inner tentacles. 
Tentacles. Twenty-four, in two rows, twelve in each ; those of the first 
row twice as large as the others, with which they alternate : variable in 
form, sometimes strongly conic.al, stout at the foot, and pointed; at other 
times nearly cylindrical and obtuse : they have a tendency to assume a 
knotted appearance : they are generally carried hanging over the margin 
with a double curve, like the branches of a chandelier ; but sometimes 
those of the inner row stand erect. 
Mouth. Not raised on a cone, so far as could be ascertained. 
Acontia. Emitted .sparingly and reluctantly. 
Colour. 
Column. Exposed portion having a mealy appearance, produced by a 
number of whitish longitudinal lines and dashes, more or less speckled 
and interrupted by the ground-colour, which is pellucid yellowish grc}’. 
Of these lines, twelve are] broader, and between these are about four 
slender lines in each interspace. The margin becomes deep buff, pro- 
ducing a depression of that hue when in the button -state. 
