bluntly pointed, with five oblique
imperfect articulations; the lower or basal articulations cannot be
traced all round, being distinct only on the ventral surface. There is a
row of short spines round the upper edge of each segment, with a little,
short tuft on the point of the terminal segment. In a rather young
specimen, however, with its capitulum one fifth of an inch long, each
appendage certainly consisted of a single segment, with spines only on
the summit.

_Penis_ purple, with excessively short and fine spines in tufts, chiefly
near the extremity. In a specimen with a capitulum only one fifth of an
inch long, the penis consisted of a mere pointed papilla, not so long as
the caudal appendage, and therefore equalling in length only the lower
segment of the pedicel of the sixth cirrus.

_Ovigerous fraena._--I could see none, though there were two large
lamellae in the sack. The ova were flesh-coloured, but they had been
dried and then placed in spirits. The ova were wonderfully numerous,
oval, much elongated, and 1/100th of an inch in length.

2. POLLICIPES ELEGANS.

POLLICIPES ELEGANS. _Lesson._ Voyage de la Coquille, tom. ii, p.
441, 1830, et Illust. Zool., Pl. xxxix, 1831.

---- RUBER. _G. B. Sowerby._ Zoolog. Proc., 1833, p. 74.

_P. capitulo, valvarum duobus aut pluribus sub-rostro verticillis
instructo: valvis et pedunculi squamis rufo-aurantiacis: squamarum
verticillis densis symmetrice dispositis._

Capitulum with two or more whorls of valves under the rostrum: valves
and scales of peduncle reddish-orange; the latter symmetrically arranged
in close whorls.

Maxillae with three tufts of fine bristles, separated by larger spines;
segments is in the first cirrus more than half the number of those in
the sixth cirrus; caudal appendages multi-articulate; filamentary
appendages attached to the prosoma.

Coast of Peru, Payta, attached to wooden posts, according to
Lesson: Lobos Island, Peru, Mus. Cuming: West Coast of Mexico,
Tehuantepec, on an exposed rock, according to Hinds.

The resemblance of this species is so close to _P. cornucopia_, that it
is quite useless to do more than point out the few points of difference.
Valves of the capitulum and scales of the peduncle, coloured (after
having been in spirits,) reddish-orange. In a specimen in which the
capitulum was 1.3 of an inch in length, there were three whorls of
valves below the carina; in this large specimen altoget