described as tuberculated; the seventh joint is very sh o rt; the
eighth slightly curved and nearly as long as the sixth, the terminal
claw about half as long as the eighth joint ; the two auxiliary claws
placed, as usual, above the base of the principal claw. The body
and limbs are clothed with a very short, close pubescence, and the
joints of the limbs with scattered longer hairs ; the last three joints
of the ovigerous legs have some rather stronger simple setæ, and
the eighth joints of the legs have each a series of three or four
spine-like bristles on the under surface near the base.
The single specimen, which is in very imperfect condition, is
from Port Jackson. As no traces of the ovary could be seen, I
think it is a male.
This specimen resembles the British form designated A. hispida
by Hodge * (which is probably a mere variety of A . Icevis) rather
than the typical A . Icevis, as represented in th at author’s figures, in
the foiTu of the rostrum and abdomen, but the leg-bearing processes
of the segments of the body are more closely approximated
and the animal more densely pubescent than in either form. I do
not observe the “ circlet of littlo spines ” at the extremity of the
first joint of tho mandibles mentioned by Hodge in his diagnosis of
A.^ hispida. Bohm f refers sjiecimens from Kerguelen Island to
this species ; hut his figure of the palpus differs markedly from the
same limb as figured by Hodge in A . lævis.
th e re are in the British-Museum collection two specimens of
uncertain British locality, jCTohahly referable to A . Icevis; hut they
are in a very had state of preservation, being gummed upon cardboard,
and can scarcely be identified with certainty.
I t is to be regretted th at during the transference of the specimen
from spirit to the slide on which it is mounted for the microscope,
the eighth joint of the only perfect leg was lost; but the figure,’
which was outlined while the specimen was j e t in spirit, represents
with sufficient accuracy the form of this joint.
This species is referable to the genus Achelia as limited by Dr.
Hoek in his recent Classification of the Pycnogonidai.
_Dr. Anton Dohrn § has united this genus (vdth several others)
with Ammothea, and the distinctions separating these genera are
certainly very slight. I think it better, however, having only two
species under consideration, to refer them to the genera as characterized
by Hoek, his being a complete synopsis of the known
genera and species of the group.
2. Phoxichilidium hoekii. (P late XXXV. fig. B.)
Body robust, with narrow intervals between the leg-hearing
processes at base. Proboscis cylindrical, increasing slightly in thickness
to its distal extremity, inserted ventrally between the bases of
Î P- 115, pi. xiii. %. 11 (18641
t Monatsb. der Akad. Wissenschaft. Berlin, p. 186, pi. i. fig . 6 (ISTO)
+ Eeport on the Pycnogonida of H.M.S. ‘Challenger,’ p. 26 (18811. '
§ ‘ Die Pantopodcn des Golfes von Neapel,’ p. 1,34 (1881).
vs
i
the ovigerous legs. Mandibles 2-jointed, the chelate terminal joint
inserted not laterally, hut at the distal extremity of the preceding
joint. Ovigerous legs 10-jointed. The legs (but not the mandibles)
are armed with strong conical spines, and bear two long auxiliary
claws besides the normal claw.
Length of the rostrum, a little over ................ 2 millim.
Length of the body (without rostrum and abdomen)
nearly ..................................................... y
Length of the abdomen a b o u t .............................. 1-5
Length of leg of the first pair about ................ 21 ”,
The body is moderately robust (as in P . flaminense), with the leg-
bearing processes nearly in contact at their bases ;--the articulations
of the segments of the body are discernible only on the ventral
surface. The cephalothoracic segment is about as long as the three
following segments taken together, and of these latter the first is a
little shorter than the second or third. The proboscis, as in P.
insigne, is inserted ventrally, far back between the bases of the two
ovigerous legs, and, as in th at species, is very slightly swollen a t the
base, in the middle, and a t the distal extremity ; the mouth is small
and triangulate, and is margined by threo slight protuberances.
The abdomen is slender, longer than in P. insigne, and directed
upwards.
The pculiferous tubercle is conical, suhacute, with four dark eyes.
Immediately behind it the cephalothoracic segment is marked by a
median longitudinal depression, extending along nearly its whole
length. The basal joints of the mandibles are but slightly divergent
and extend considerably beyond the front of the proboscis ; they
have no indication of tho acute process characteristic of P . insigne
and hear the second joints, which are about half as long as the
first, at their distal extremities ; the pincers are smooth on their
inner surfaces. The basal joints are nearly glabrous. The second
joints and the pincers at base are clothed with fine hairs, which
are most abundant on the under surface of the second joint. ’
The ovigerous legs are inserted on either side of the base of the
proboscis and are 10-jointed ; the first and third joints are short,
the second a little longer, the fourth and fifth still longer and of nearly
equal length, but the fourth is somewhat thickened, the sixth about
as long as the second, the seventh to tenth small, the tenth minute ;
the last five joints are clothed with fine hairs.
The first joint of the legs is small, nearly as long as the lateral
process, the second more than twice as long as the first, the third
about half as long as the second ; the fourth is about as long as the
three preceding joints taken together; the fifth slenderer and a
little longer than the fourth ; the sixth also slenderer and about as
long as the fourth ; the seventh is very short ; tho eighth slightly
curved and longer than the first, hut not as long as the second Joint.
The first joint of the leg bears, at the distal extremity of its upper
surface, one or two small conical spinules or protuberances, and at the
: :: I'i
( !