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sures 5 lines (1 0 | millim.) in length, and about 8 | lines (18 millim.)
in breadth.
In two of these specimens the coloration is reddish brown, with
the very short pubescence of a brownish hue ; the three others (103)
are much paler, and the pubescence is of a light hue.
These specimens agree with Dana’s descrijition and figures in
most particulars, and especially in the very considerable transverse
width of the carapace, very concave postero-lateral margins, and
very short pubescence of the carapace, wherein they differ from
most other species of Actæa ; the lobes of the antero-lateral margins
of the carapace are, however, very indistinct and are themselves
interrupted ; and the areolæ of the upper surface appear to be much
more strongly defined and separated by deeper furrows than in
Dana’s figure*. His specimens were from tho Sooloo Sea or Balahac
Straits.
Actæa consobrina of Alphonse Milne-Edwards t is a closely allied
species from Upolu, which, as far as can be learned from the very
brief diagnosis, is only distinguished by the lighter coloration and
4-lohed antero-lateral margins. I t may not he distinct from
A . areolata, or, if distinct, perhaps our specimens should be referred
to it.
41. Banareia inconspicua. (P la te XIX. fig. C.)
Carapace transverse, moderately convex, everywhere clothed
with rather short hairs, beneath which the surface is granulated ;
similar hairs cover the upper surface of tho legs ; the carapace is
not lobulated, nor are the interregional sutures visible ; the front is
4-lobed, the lobes small, rounded, and equidistant. The anterolateral
margins are longer than the postero-lateral, unevenly granulated,
with very obscure traces of division into teeth or lobes ; the
postero-lateral margins are strongly concave. The epistoma is
almost linear-transverse ; the anterior margin of the buccal cavity
projects, and is divided by two very distinct fissures. The post-
ahdomen presents nothing remarkable. The antennules are obliquely
folded; the antennæ have a rather stout basal joint, which
reaches to the infero-lateral angle of the front, and a rather long
flagellum. The ischium-joint of the outer maxillipedes is but little
longer than the merns, which is nearly quadrate. The chelipedes
are nearly smooth and unarmed, without spines or tubercles ; the
merus or arm is trigonous, its upper and lower margins fringed with
hairs ; the wrist is clothed with hair on its upper and outer surface
the angle on its inner surface prominent, but without a tooth or
spine ; palm also hairy above and on the upper part of its outer surface,
naked on the lower part, where it is punctulated, and granulated
on its lower margin ; fingers nearly as long as the palm, naked
(except at the base of the upper margin of the mobile finger
* U.S. Explor. Exped. xiii Crust, i. p. 162, pi. viii. fig. 1 (1852).
t Journal Museum Godeffroy, iv. p. 79 (1873).
or
dactyl, where there are a few hairs), acute at their apices, and denticulated
on the inner margins only at base, the margins (in their
distal half) thin-edged and entire. Ambulatory legs of moderate
length and rather compressed ; the dactyli very short. Colour (in
spirit) purplish or fuscous brown. Length a little over 5 lines
( I I millim.), breadth nearly 8 lines (1 6 | millim.).
Two specimens (males) were obtained on the beach at Port
Darwin (Xo. 176).
The absence of any distinct lobation of the carapace or of distinct
antero-lateral marginal teeth is very characteristic of this species,
which is also distinguished by its qnadrilohate front. (See fig. c.)
I a t first referred this species to the genus Actæa, not having
observed the notches in the front of the endostome*, which in one
specimen are nearly obliterated. In a specimen sent by Mr.
Haswell from Port Denison, which in its narrower carapace connects
this species with Atergatopsis, these notches are deep and well
defined. In two specimens in the Aluseum collection which I refer
to the typical Banareia armata, A. Al.-Edwards (since they agree
with th at species‘in aU particulars except in the notches of the
endostome), they are nearly obliterated.
The genus Banareia apparently connects the genera Actæa and
Atergatopsis, and will have, perhaps, to be united with the latter,
with which it agrees in the somewhat broader basal antennal joint
and narrow naked acute finger-tips.
42. Xantho macgillivrayi. (P la te XX. fig. C.)
Carapace transverse, of the form usual in this genus, with the
cervical suture and the depressions separating the prominences of
the postfrontal, gastric, hepatic, and branchial regions very distinct ;
these lobules are themselves granulated, the granules being for the
most part disposed in short transverse raised lines or low ridges,
which are most prominent on the anterior part of the carapace ; the
intestinal region is plane and more or less punctulated. The front
is rather prominent, and (in an adult example) more than one fourth
the greatest width of the carapace, and is divided by a very slight
median notch into two truncated lobes, exterior to which on each
side is a small and less prominent tooth, formed by the inner and
upper angle of the orhit ; the antero-lateral margins are armed with
four rather small but acute and well-defined teeth, which increase
regularly in size from the first to the last ; the suhhepatic and pterygostomian
regions and the postero-lateral margins of the carapace
are granulated. There is a small tooth at the outer and another
at the inner suborbital angle. The male postabdomen is o-jointed,
the third to fifth segments coalescent ; th at of the female is 7-jointed.
The eye-peduncles are small, and thickened at their bases. The
basal antennal joints are in contact with the subfrontal lobes. The
outer maxillipedes present nothing remarkable, having the ischium-
* Annales de la Soc. Entom. de France, sér. 4, ix. p. 168, pi. viii. (1869).
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