28 
bv its having great intervals between tbe pinnae, and tl' e c .®^ 
not having their apertures everted as in the following specie 8 
and beside this the aperture here is always pointed. 
SEA SPLEENWORT, or POLYPODY. Th. A# 
ciilata. Polypidom plumous ; stem of equal thic ^ 
throughout; pinnae stout, closely arranged, alternate; c< . 
hi serial on the pinnas and stem ; imbedded, closely arrant, 
alternate; vesicles elliptical. « 
Sea Spleenwort or Polybodv, Ellis’ Coral., p.11. no. - s 
pi. (5, fio-. a A. Sertularia Lonehitis, Ellis and Solan 
Zooph.,°p. 42. Sertularia Lichenastrum, Turton’s . 
vol 4. p. P 683. Stewart's Elem., vol. 2, p. 447. ltoj«£ 
Articulata, Fleming’s Brit., An., p. 545. Johnston s 
Zooph., p. 138, pi. 15, fig. 3 and 4. -v 
Hab. On the hack of the corwich crab, (Maia Verrucas / 
Polperro, Goran-haven on a stone from deep wa ^ 
Mr. Peach. It is not at all rare to meet with fragments, " 
all or most of the pinnae gone, but it is very rare to 
with a good specimen. . , nut 
This species varies in height from two to four inches, 
one specimen which Mr. Peach procured from Tor ► 
Devonshire, measured five inches and a quarter. >» [, 
living it is of a beautiful pellucid amber colour j 
becomes duller in dying. The stem is stout, of nearly e 1 
thickness throughout, and divided very irregularly J>y 
perfect septa. The pinnte, which are closely arranged, 
from tbe stern in an alternate manner, and are confine j 
ils upper part; those on the lower portions are thrown 
in regular succession, as the polypidom advances in gre ' 
The cells are biserial, on the pinr.se and trunk, adnate, cl 
arranged, alternate; their apertures are even, everted^ 
not prominent The vesicles arise from each side oi gf( 
pinnse, but most numerously from the upper; they 
oviform, sub-pedunculated, with contracted terminal W 
Fragments of this species are frequently found ®n „ 
backs of corwich crabs in the spring and summer, j|s 
they first move from their hybernating retreat. On 8 0 
stones, eight or ten leagues from land in about . 
and juiu'.o — — — o - . „ 
fathoms water, after some weeks of continued line wt 
they have been found in a very perfect state. 
ANTENNULARIA. Lamarck. 
Generic Character: Plant like, horny, simple or bra n ® #if 
irregularly, the shoots fistular, jointed, clothed wim ^ 
like verticillate branehlets; cells small, sessi (jh 
panulate, unilateral; vesicles scattered and uni 
Polypes bydraibriii. 
