shaped,
rather far separated from each other; imbedded in membrane, so that even
their summits are rarely uncovered. The surface of the membrane is
thickly clothed with spines, which are strong, thick, yellow, pointed,
and furnished with large tubuli running to the underlying corium. These
spines are arranged in groups of from three or four, to five or six.
Besides these larger spines, the whole surface is villose with very
minute colourless spines, not above 1/20th of the length of the larger
ones. The surface of attachment is broad. This species, not being
symmetrically attached to a coralline, the peduncle does not curve, as
in most of the other species, towards the rostrum.

The capitulum is above half an inch in length.

_Mouth._--The labrum is much produced downwards, but yet the mouth is
not very far distant from the adductor muscle: the upper part is
bullate, forming a small overhanging point, and in longitudinal diameter
equals the rest of the mouth. _Palpi_ blunt.

_Mandibles_ with four teeth, strong, short, thick, the second tooth much
smaller than the others; inferior angle broad, pectinated.

_Maxillae_ with a long, rather sinuous edge, which, near the inferior
angle, has a narrow projecting point, bearing rather finer spines; there
is, also, apparently, a very minute tuft of small spines close under the
two large upper spines: there are, altogether, about twenty pair of
spines, without counting the smaller ones.

_Outer Maxillae_, with the inner edge slightly concave, continuously
covered with bristles; exteriorly, with a prominence covered with longer
bristles. Olfactory orifices prominent, protected by a slight punctured
swelling between the bases of the first pair of cirri.

_Cirri._--Prosoma moderately developed; first pair of cirri rather far
removed from the second pair. The segments of the three posterior pair
are not elongated, short, slightly protuberant in front, bearing four or
five pairs of strong spines; a little below each pair, there is an
intermediate tuft of very fine straight bristles, of which the upper
tuft is the largest; on the lateral upper rims there are some short,
strong spines; dorsal tufts rather small and thick; spines all more or
less serrated, especially on the broad basal segments of the three
anterior cirri. Pedicels of the cirri not particularly protuberant in
front. First cirrus with rami, slightly unequal in length; not short;
basal segments much thicker and more p