ine, various.

_Size and Colour._--The largest specimen, including the peduncle, was
half an inch in length, and 3/10ths of an inch across the capitulum;
colour, after having been long in spirits, brownish-yellow.

_Filamentary Appendages_, one on each side, short, tapering and pointed;
seated on the posterior margin of a slight swelling beneath the basal
articulation of the first cirrus; they are about equal in length to the
pedicels of this cirrus.

The _Mouth_ is directed abdominally; labrum much produced downwards, so
as to be far separated from the adductor muscle; moderately bullate,
forming about one third of the longitudinal axis of the entire mouth;
upper part forming a slightly overhanging prominence; crest with a row
of blunt, bead-like teeth, and externally to them there are numerous
curved short bristles.

_Palpi_ (Pl. X, fig. 8,) unusually narrow, a little hollowed out along
their inner margins; pointing towards the adductor muscle; thickly
covered with doubly serrated bristles.

_Mandibles_, with either two or three teeth; inferior angle narrow and
tooth-like; both sides covered with strong bristles or spines,
projecting beyond the toothed edge.

_Maxillae_, with two large upper spines, and a third rather distant from
them; beneath these, there is a wide notch or hollow; inferior part
square, projecting, bearing six pair of moderately long spines, (of
which the central one is the longest,) mingled with finer ones.

_Outer Maxillae_, with a semicircular outline; the serrated bristles in
front are divided into two groups; externally there is a rounded and
very considerable projection covered with long bristles. Olfactory
orifices slightly prominent, approximate, seated within and just beneath
the rounded projections at the base of the maxillae.

_Body._--Prosoma little developed; thorax small.

_Cirri_, extremely long, but slightly curled, capable of being protruded
so as almost to touch the base of the peduncle or the surface of
attachment; segments short, extraordinarily numerous. In the three
posterior cirri (excepting the rudimentary rami), each segment supports
two long, slightly serrated spines, with two or three minute
intermediate ones, and with one or two very short, thick spines on the
inner and upper lateral margins: dorsal tufts with only two or three
long, fine, unequal spines. All the segments are extremely flat, broad,
short, with their anterior faces not protuberant; the greater nu