21 
^hgated peduncles, which arise f 
' le 'r apertures are terminal, u 
UP11 onrl M'inn> tliAt' urn C 1 
from the base of the cells, 
nartned and contracted ; 
p n recent and living they arc smooth, but are frequently 
j, la tked, when preserved, with longitudinal furrows. This 
np ’n of the vesicle is rarely observed except when it has 
' 1 r i'"ed at perfection, but in a less advanced state the upper 
!j” p tion is flat, and the circumference irregularly lobulatod. 
11 «y only arise from the upper edge of the pinnae, and are 
.turned to the same side of the fan of the polvpidom. 
1 1 ,s species, as it is seen in collections, is of a dark or 
a ‘-k-brown colour, from which it derives its specific name; 
s U 1 to see it in all its beauty it must he examined in a living 
and soon after it is taken from the sea; when instead 
. being black, it will be found of a beautiful and delicate 
and in some instances of a deep arterial blood colour. 
|. 18 the stoutest and most rigid of all our native Sertularias, 
»m *^ ere are several others which exceed it in beauty 
' delicacy. Though not so generally diffused as many 
q ' ep s, it is far from being uncommon in particular localities. 
, . i the Deadmau-poiut it is found, though rarely ; at a few 
j s lles west and north-west of the Eddystone lighthonse it 
e t0| timon, and from that locality ( have obtaiued some 
] 1 ‘ t ^ ee <dingly fine specimens, which, from January to May, 
e abounded in ovarian vesicles. It is firmly rooted to 
(j s tone on which it grows, by tubular matted fibres, of a 
’be l ‘ nt than the °ther parts. On the lower portion. 
^ampanularia dntnosa is frequently abundant 
C(, ' 0r ding to Johnston, Milne Edwards supposes there 
h two species confounded under this name. The species, 
6ver > 'bat I have found in the Cornish waters is the 
t] 1() e as that figured by Johnston at pages 1 19 and 129, 
of n §b 1 b a ve not observed the irregularity in the distribution 
® e 'ls on the pinnae, or the form of the apertures of those 
»t) 
Sj, le trunk, figured and noticed by him, 
TAMARISK. S. Tamariica. Cells opposite, tu- 
s - ap ; the upper half divergent, with a wide aperture, 
" n ' 1 ated on the margin; vesicles oval, truncate, with two 
a ** points on the corners, and a tubulous mouth. 
8 er . a . Tamarisk, Ellis’ Coral., p. 4, no. 1, pi. 1, fig. a A. 
% U| *na Tamarisca, Ellis and Solander, p. 3(5, no. 1. 
Jo t "“ s Tin., vol. 4, p. 67t>. Stewart’s Elem., vol. 2, p. 441. 
V**’' Brit. Zoopb., p. 130, pi. x, figs. 2, 3, and 4. 
1 ‘ s ca°D° ux 8 Oor. n ex o P* l88 > l10, Ilynamena Tama- 
h leming’s Brit. An., p. 543. 
• On the Pinna Ingens, from deep water, rare. 
' v at e |,° locality in which this has been found is in deep 
°d Mevagissey, and even thence only a tew specimens 
