33 
. P- PENNATULA. “PI nmose ; the pinnae opposite ; cells 
lri a close row, cop-like, with an unequally crenaled margin, 
Su Pporterl on the underside, by a lengthened incurved spinous 
Process.” Montagu. 
Sartularia pennatula, Ellis and Solandcr’s Zooph., p. 56, 
p ? , figs. 1 and 2. Aglaophenia pennatula, Lauiouroux’s 
^ 0r - Flex., p. 168. Sort, pennatula, Turton’s Lin., vol 4, 
P' 681. Plum, pennatula, Fleming s Hr. An., p. 546. John- 
son’s Brit. Zooph., p. 145, pi. 8, figs. 1 and 2. 
Sab, On Pinna ingens, from deep water, off Deadman 
P°'nt, very rare. 
This is so rare a species, that I have met with but one 
s P R cimen. In its general appearance it approaches very 
c, °sely to the Podded Coralline; from which however it is 
' er y readily distinguished. The stem is divided into joints, 
® a ch bearing two pinnae; the pinnae are closely arranged, 
v,a ved and opposite. The cells are unilateral, on the inferior 
^'ge of the pinnae, one on each internode; they are small, 
Cll P-shaped, with irregular patulous apertures, and with a 
ni *nate denticle on each side ; from the base of each proceeds 
a lo «g tubular spine, which varies in length from two to two 
i*’ 1 * 1 half times the diameter of the cell and rises above it. 
10 specimen procured in the Cornish seas, was not so 
yQsely pinnated as Ellis’ beautiful figure, but more so than 
Jo,| nston’ s . 
j That variety of the Podded Coralline, which has the 
,f®gthened sub-marginal spine, bears a great resemblance to 
, l, . s species. But it is distinguished from it, by the cells 
on the upper margin of the pinnae, deeply tubular, by 
le regularity and decided manner in which the margin is 
. eQ tated, and* by the spine, though long, projecting from the 
,1 e of the cell, 'leaving a space between it and the margin of 
le mouth, which is not the case in this species. 
BRISTLES. P. Selacea. Plumose ; the pinnae al- 
ternate, one on each internodc of the stem, rising near the 
joint on a slight protuberance ; cells distant, cup-shaped, 
' v ilh an even margin, resting on an enlargement ot the 
“ranch, with two minute teeth between each; vesicles 
“Eiptical, smooth. 
3 Sea Bristles, Ellis’ Coral., p. 19, pi. xi., no. 16, a A., tab. 
figs. 4, d.t. Aglaoph. setacea, Lamoroux’s Cor. Hex., 
a ' Sert. pinnata, Stewart’s Elen)., vol. 2, p. 446. Sert. 
in > ea> Turton’s Lin., vol. 4, p. 683. Plum, setacea, Flem- 
9 8’s Brit. An., p. 547. Templeton in Mag. Nat. Hist., vol. 
s’ P- 467. Johnston’s Brit. Zooph., p. 146, pi. 18, figs. 
and 5 . 
