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joint barelj- reaches to the subfrontal angle, bnt attains to a level
with the apex of the inner suborbital lobe; the antennal flagella are
much elongated. The chelipedes (in the single male examined) are
rather slender and nearly eq u a l; the arm has two spines at the
distal end of its upper m arg in ; tlie wrist is armed with several
spines, the strongest one being on the inner margin ; the palm has
its upper margin and outer surface armed with small spines or spiniform
tubercles disposed in longitudinal series; these are with
difficulty discernible through the hairs covering this jo in t; fingers
brown, and distinctly dentated on their inner margins. The ambulatory
legs are elongated and slender, and have their upper and
lower margins clothed with long hairs. Colour reddish (in spirit),
with purplish markings. Length about 2 | lines (5 millim.), breadth
3 lines (nearly 7 millim.) ; length of penultimate ambulatory limb
nearly 6 lines (12 millim.).
The single specimen (a male) was obtained at Port Denison,
4 fms. (No. 111).
P. cursor, A. M.-Edwards, was founded on specimens from New
Caledonia and the Samoa Islan d s; the description differs from the
above in several minor particulars ; hut I have thought it better to
regard the Australian example before me as identical with this
species than to run the risk of unnecessarily adding to the synonyma.
Mr. Haswell (Cat. p. 67) records it from Port Alolle.
60. Pilumnus labyriiithicus. (P late X X II. fig. C.)
In this curious form the surface of the carapace is everywhere
covered with raised curved or sinuated ridges, which are separated
hj" wide depressions ; the body and legs are covered with a dense
close brown pubescence; from most of the ridges and from the teeth
of the antero-lateral margins of the carapace spring longer setae,
and the margins of the ambulatory legs are also fringed with longer
hairs. The frontal lobes, which are scarcely separated as usual by a
median notch, are rather broad, straight, and but little prominent;
the antero-lateral margins are somewhat shorter than the posterolateral,
and are armed with three distinct teeth, th at of the exterior
orbital angle being obsolete. The orbital margin is somewhat
thickened; the epistoma rather longer in proportion to its breadth
than is usual. The basal antennal joint is short, scarcely attaining
to the subfrontal process, and not nearly reaching to the apex of
the very prominent lobe at the inner suborbital angle. The chelipedes
are rather smaU and (like the carapace) are densely pubescent,
besides being clothed with longer h a irs ; the outer surface of the
wrist or carpus is tuberculated beneath the hairy co a t; the palm is
clothed externally with long dense h a irs ; the upper margin of the
palm hears three distinct tubercles ; the fingers are slaty coloured,
dentated on their inner margins and acute at their apices. The
ambulatory legs are densely hairy and of moderate length. Length
of carapace nearly 4 lines (8 millim.), breadth about 4^ lines
(9 millim.).
One specimen (a male) was ohtained at Port Molle, 14 fms.
(No. 93); in the second collection are an adult female and two
smaller specimens from Thursday Island, 3 -5 fms. (Nos. 165, 177).
In many of its characters this species resembles P. vespertilio,
bnt differs in the curious sculpture and less dense hairiness of the
carapace, the prominent teeth of the antero-lateral margins, and the
existence of distinct teeth on the upper margin of the palm (fig. c).
In the very remarkable sculpture of the carapace it somewhat
resembles P. vermiculaiiis, A. Al.-Edwards*, from New Caledonia;
hut in th at species the vermiculations are much less numerous, the
front is much deflexed and in a continuous line with the upper
orbital margin, the teeth of the antero-lateral margins are much
more obtuse, &c.
61. Pilumnus? pugilator?
? Actumnus pugilator, A. M.-Edwards, Nouv. Arch. Mus. Hist. Nat.
ix. p. 195, pi. vii. fig. 1 (1873); Haswell, Cat. Austr. Crust, p. 72
(1882).
Here is referred, though with some hesitation, a fine male from
Port Alolle, 14 fms. (No. 93) ; also a male and two females in the
British-Aluseum collection, preserved dry, and dredged by Air. Macgillivray
in 17 fathoms between Percy Island and the mainland, on
a bottom consisting of coarse sand and shells. M. A. Alilne-Edwards
says th at the regions of the carapace in his unique example (obtained
at" the island of Lifu) are distinct, whereas in the Australian
examples I have before me scarcely any traces of the intervening
depressions e x is t: moreover the form of the seriately disposed
tubercles of the outer surface of the chelipedes is very peculiar and
characteristic ; these tubercles are separated, indeed, at their bases,
but have their heads dilated and in contact with one another, and
the heads are also armed (usually on one side only) with laterally
projecting spinules. This disposition cannot be seen except under a
lens of considerable power, and hence may have been unnoticed by
M. A. Alilne-Edwards.
Mr. Haswell gives Darnley Island as an additional Austrahan
locality for this species.
62. Actumnus setifer.
Cancer (Pilumnus) setifer, De Haan, Paun. Japon., Cr. p. 50, pi. iii.
fig. 3 (1835).
Actumnus tomentosus, Dana, Proc. Ac. Nat. Sci. Phil. p. 82 (1852);
U.S. Explor. Exped. xiii. Cr. i. p. 243, pi. xiv. fig. 2 (1852) ; A. Al.-
Edwards, Nouv. Arch. Mus. Hist. Nat. i. p. 285 (1865); Targioni-
Tozetti, Crostacei del Viaggio della ‘Magenta,’ p. 56, pi. ix. figs. 22-
24, 26, 29 (1877) ; Hasivell, Cat. Austr. Crust, p. 73 (1882).
Actumnus setifer, A. M.-Edwards, t. c. p. 287, pi. xv. fig. 5 (1865) ;
V I
i ii
* Nouv. Arch. Mus. Hist. Nat. ix. p. 247, ph ix. fig. 6 (1873).
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