THE BRISTLE PLUMULARIA. 311
they were Kestrels ; and this curious liabit of remain-
ing suspended on the wing in the face of the wind, has
acquired for them the provincial names of Standgale
and Windhover. The pelting storm drove me into
the house ; but when it had abated, after some half-
hour's duration, I again looked out, and there were
the hawks hovering yet, just where I had left them.
THE BRISTLE RLUMULARTA.
Aug. \4,th. — I found a Spider-crab in a hole, whither
he had retired for the purpose of sloughing. The
carapace and limbs were thickly studded with Ajiten-
nularia antenniria, and Plamnlaria cristata, many
stems of each well set with ovigerous vesicles. One
of the stems of the latter bore, parasitically springing
from it, many stems of a more delicate congener.
Plum, setacea, and some of these were also furnish-
ed with vesicles, which I presently submitted to
examination.
I selected a specimen with many vesicles, some
empty, some broken oif in the middle, others contain-
ing more or fewer gemmules, or "planules;" and one
in the midst of the last-named, uniformly filled with
the common granular matter of the medullary core,
not vet condensed into ova. About five or six seemed
to be the complete number of gemmules in one vesicle,
of which those nearest the narrow neck w^ere alive and
active, while the most remote was a small motionless
sphere.
My attention was presently attracted to a gemmule