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gascar (Bev. Deans Ooivan) ; Mauritius (Lachj F. Oole) ; Rodriguez
(G. Gulliver); Indian Ocean, Celebes, Macassar, &c. (coll. Dr.
Bleeker) ; Keeling Islands (Lieut. Burnaby, B.N.) ; various islands
of the Fiji group (H.M.S. ‘ Herald ’) ; Samoa Islands, Upolu (Bev.
S. J . Whitmee) ; Sandwich Islands ( U.S. Exploring^ Expedition and
W. H. Pease) ; besides others without special or with iusnfflciently
authenticated locality.
All the Australian examples I have seen, with one exception,
appear to belong to the variety (as at most I consider it) described
by Milne-Edwards as intermedius. One, however, of the specimens
obtained at AA+st Island (No. 149) must, on account of its coloration,
be referred to the variety designated thukujar by Owen. The
colour is not indicative of geographical races or subspecies, since of
this latter variety I have examined specimens both from the Mauritius
and the Sandwich Islands. Mr, Kingsley, in his recent
“ Synopsis of the Grapsidæ,” * does not regard these forms even as
varieties, but unites them all under the one designation AI. messor.
90. Chasmagnathus (Paragrapsus) lævis, Dana.
A male and female from Port Jackson, 0-7 fms. (one numbered
104), are referred here. They differ somewhat from the New-
Zealand examples which I suppose belong to this species, in the
British-Aluseum collection, in having bnt very few or no yellow
spots on the surface of the carapace. In the New-Zealand examples
(Sowerhy), and others without definite locality in the Aluseum collection,
both carapace and legs are plentifully mottled with yellow,
and the front is perhaps a trifle more rounded at its lateral angles ;
hut in other particulars the specimens are so nearly alike th at I do
not venture to regard them as belonging to distinct species. ■
Mr. Kingsley, in his “ Synopsis of the Grapsidæ ” above referred to
(p. 222), has referred to the synonyms of this species. He unites
the genera Chasmagnathus and Paragrapsus, and the distinctions
between the two are certainly very slight ; but it may he convenient
to reserve the name Paragrapsus as a subgeneric designation, at
least, for the species with less convex body and broader less deflexed
front, which, in what may he regarded as the typical Chasmagnnthi
(e. g.’c . convexus and C. granulatus), resembles th at of Helice tndens
in being strongly curved downward, with an arcuated anterior
margin th at does not project in the middle line over the antennulary
r0crioil.
The range of C. lævis, as far as a t present ascertained, is restrmted
to the north and south-eastern shores of Australia and the New-
Zealand coasts.
91. Sesarma bidens, De Haan ?
Port Curtis, 7-9 fms. (No. 85). Two specimens (males).
These examples are referred with little hesitation to S. bidens,
* Proe. Acad Nat. ?ci. Philad. p. 190 (1880).
althouo-h the beaded row of granules on the upper margin of the
mobile”finger is much less distinctly marked than in the specimen
^ ^ S f e r a l sgláes^oí this genus have been described agreeing with
S bidens in the bidentate lateral margins of the carapace, and in
having two smaU oblique pectinated ridges on the upper surface ot
the palm. Of these, I regard S. lividum and S . guttatum, A. Al.-
Edwards *, as very doubtfully distinct.
S . dussumieri, Al.-Edwards t , from Bombay, is very briefly characterized;
but as the words “ ponce snhcrenele _ occur in the de-
, scription, it may be th at our specimens belong to it. _
There are specimens th a t I refer, at least provisionally, to this
species in the collection of the Museum from the Bkilippme Islands
(Cuming, FertcA), Koo-Keang-San (H .A I.S .‘ Sarruirang ), Malaysian
L a s without locality (Dr. P. Bleeker), and h ew Hebrides (J. Macgil-
livray). This latte r example does not differ appreciably from the
figure of S . lividum. A. H.-Edw„ fonuded on a ^ew-Caledoman
elample {vide N. Arch. Mub. H . S . ix. p. 303, pi. x ri fig 2 l ^ S)
This, as M. de Man has shown, is a species ranging throughout the
Oriental region. • ra-p
There are, besides, in the collection two very small specimens ot
a species of this genus belonging to the section having a carapace
with entire lateral margins, which I will
The larger, a female, is from Port Jackson (0 -5 fms.), the smalle ,
a male, from Port Curtis. I t cannot, I think, be identified with
Sesarma erythrodactyla,^eaa, from Sydney Í , m which the enter
border of the mobile finger is ribbed, and the inner provided with
two larger and several smaller teeth, &c.
92. Pinnotheres villosulus.
? Pinnotheres vülosulns, Guérin-Ménévñlh, Cr. in Voyage * ^oquille,
Zool. ii. p. 13 (1830) ; Icon. Regne Ammal, Ci. p. 7, pi. u .
? Hnnothmes villosus, M.-Fdioards, Ann. Sci. Nat. sér. 3, Zool. xx.
p. 218, pi. xi. fig. 8 (1853). _
A female in Dr. Coppinger’s collection, obtained at AS*amor Reef
Torres Straits, agrees in nearly all particulars with Gue
description based on specimens from Timor, and the inaxúlipede_ is
almost exactly of the form delineated by Milne-Edwards. Guerm,
however, describes the front as emarginate, whereas in the specimen
I have before me it is triangulate and deflexed. In the
line sketch of the front and antennae in his Iconographie the
rostrum appears, however, to he triangulate and bent down between
the oblique antennules just as in Dr. Coppinger s specimen. I pre
therefore, to refer the latter provisionally to Guerin-Menevüle s
spedes rather than to incur the risk of adding needlessly to the
* N Arch. AIus. Hist. Nat. v. Bulletin, P P - 25, 26 (1869).
t Ann. Sci. Nat. sér. 3. Zool. xx p. 18q (18o3).
+ Ai-cbiv. AIus. Hist. Nat. p. 151, pi. w- fig- 10 (1865). .
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