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the penultimate and antepenultimate joints of the ambulatory legs
are more distinct.
2. Petalomera pulchra. (P late XXVII. fig. A.)
Carapace somewhat ohlong-oval, and a little longer than hioad,
moderately convex aud granulated; its anterior parts are rather
thinly pubescent, the front in its median portion is nearly vertically
defiexed (see fig. «) ; the lateral frontal lobes are prominent, in a
dorsal view triangulate, and are separated from one another by a
deeply concave interspace. The upper orbital margin is thin, prominent,
and entire ; there is a small notch at the outer angle ; the
sides of the carapace are armed with three small teeth placed in an
oblique series, the anterior of which is situated upon the suhhepatic
region ; the carapace iu front of these teeth is somewhat coarsely
granulated. Distinct longitudinal ridges exist on tho endostome or
palate. The ste rn alsmZîü in the female are remote from one another,
and terminate in tubercles which are situated a little behind the
bases of the second pair of legs (see fig. d). The eyes are of
moderate length, corneæ distinct ; the peduncles of the antennæ are
rather robust; the second joint somewhat longer than the first or
the third. The merus-joint of the outer maxillipedes is about as
long as the ischinm, truncated at its distal end, and without any
notch at its antero-external angle where the next joint articulates
with it. The chelipedes are subequal ; the merus has its upper
margin produced into a high arched crest, its inner surface is smooth
and polished, its outer pubescent, the inner and lower margin is
sharp-edged and entire ; the Avrist and palm are also slightly cristated
above, and ha\-e their outer surfaces granulated and pubescent ;
the wrist has two larger tubercles or prominences at its distal end ;
the granules on the palm disposed in six longitudinal series ; fingers
somewhat shorter than the palm and meeting along their regularly
serrated inner edges AA'hen closed, excavate and naked at the apices.
The ambulatory legs are pubescent and moderately robust ; the
merus-joint of the first pair has its upper margin jiroduced (as in the
chelipedes) into a high arched crest, in the next pair this joint is
not specially dilated and its upper margin is straight; the last two
legs terminate in a small curved claw, but the penultimate joint has
no terminal spiniform process. Colour (in spirit) greyish or cinereous.
Length of carapace nearly | inch (19 millim.), breadth
lines (18 millim).
The females were ohtained in Prince of Wales Channel, 7-9 fms.
This species is distinguished from P. granulata, Stimpson, the
type of the genus, from Kajosima, Jajian, by the absence of a distinct
supraocular tooth, and by the non-cristated merus-joint of the
third pair of legs, &c. I t cannot he confounded with any of the
Australian Dromice described by Mr. Haswell (Catal. pp. 139—141).
261
PAEATYMOLUS, Miers.
The afiinity of Paratymolus, and particularly of the later described
species P. latipes, Haswell, and P. sexspinosus, Aliers, w ith Telmessus
is pointed out by Air. Haswell, and is undeniable, notwithstanding
the very differently shaped carapace of Telmessus, and the fact th at
in th at genus the basal antennal joint has its outer margin produced
into a broad triangulate lobe which enters the inner orbital hiatus.
The affinities of Paratymolus with llomola are also very evident,
and I have already referred to them. In P. puhescens and P. hitu-
berculatus the distal margin of the merus-joint of the outer maxillipedes
is somewhat rounded as in certain Inachidæ, to which family
this genus further approximates in its slender basal antennal joint.
Whether the genus Paratymolus he associated with Telmessus or not,
its affinities are, I think, wirh the Alaioid Anomnra, to which also
Eomola belongs, rather than with the Corystidæ. I retain this
genus therefore for the present near the Dromiidæ, where also
Haswell keeps it.
3. Paratymolus hituberculatus, HasweU, var. gracilis.
A male is in the collection, from Prince of Wales Channel,
7-9 fms., which is thus designated with some hesitation. The principal
character distinguishing P. hituberculahis from P. puhescens is
to be found in the subtriangulate chela, the upper distal end of
which is produced into a more or less prominent tooth the teeth on
the posterior margins of the merns and palm, which aie veiy
distinctly indicated in Air. Haswell’s figure, exist in Dr. Coppinger’s
specimen only as small tuberculiform setigerous prominences ; and,
moreover, the spine in front of the principal hepatic spine, which
exists in the type specimens of P. puhescens and of P . hituberculatus,
is wanting in the example from Prince of Wales Channel, which
should not improbably he separated as a distinct species.
A mutilated female, in wliich both chelipedes are deficient, from
Thursday Island, 3 -4 fms. (Xo. 177), greatly resembles the type of
P. puhescens, Aliers*, from Alatoya, in the form of the carapace and
number and disposition of its spines and tubercles, differing onlj in
the somewhat less prominent rostrum, and may perhaps belong to
th at species.
4. Paratymolus sexspinosus. ( P l a t e XXVII. fig. B.)
This form is a near ally of the Paratymolus latipes described by
Air. Haswell, but differs in the following particulars -.—The lobes of
the rostrum are blunter, and the median notch much smaller ; the
antero-lateral margins of the carapace are armed with only three
spines or teeth, including the præocular spine, the postocular being
deficient; the chelipedes and ambulatory legs in the specimens
examined (which, however, are females) are slenderer; the merus-
* Proc. Zool. Soc. p. 45, pi. ii. fig. 6 (1879).
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