f growth, with one or two sharp teeth
or spines on both faces; imperfectly calcified; in width barely 1/15th
part of the carina.

_Peduncle_, short; the scales alone in the uppermost whorl are plainly
toothed; they are transversely elongated, and almost quadrangular, and
are nearly twice as large as those in the second whorl. Beneath this
second whorl, there are two or three whorls, with scales, graduated in
size; and the rest of the peduncle is covered by rather distantly
scattered, minute, rounded or acutely pointed scales: the pointed scales
are directed upwards, and are best developed under the carina. The basal
calcareous cup, judging from two specimens, is thin, and not much
developed.

_Size and Colour._--The largest specimen was nearly 6/10ths of an inch
across its capitulum. The calcareous valves are dirty white. The sack
is (after having been long kept in spirits) pale coloured, excepting a
small purple space, between the scuta and another over the carina. The
three posterior segments of the thorax and portions under the second and
third cirri, the trophi, the pedicels and the anterior faces of the
segments (especially of the basal segments in the second and third
cirri), and a spot on their dorsal surfaces, and the penis are all
coloured dark purplish-black. The prosoma is pale coloured.

_Mouth._--Crest of labrum with a row of bead-like teeth and hairs.
_Palpi_ bluntly pointed, with neither margin hollowed out.

_Mandibles_, with eight pectinations between the first and second main
teeth, and three between the second and third teeth; inferior angle
coarsely pectinated, with a central spine much longer than the others;
the distance between the tips of the first and second main teeth, is
about equal to that between the tip of the second tooth and of the
inferior angle.

_Maxillae._--Under the two upper long spines (associated with some
smaller ones), there is a slight and wide hollow; and the whole inferior
edge obscurely forms two blunt points, with the spines on the lower
projection smaller than the upper spines.

_Outer Maxillae_, considerably concave in front, with the spines almost
discontinuous in the middle part.

_Cirri._--First pair rather far separated from the second pair. The
segments of the three posterior cirri bear three or four pairs of main
spines, and are otherwise characterised like the foregoing species.
_First cirrus_, with its anterior ramus much thicker than the posterior
ramus,