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143
foregaaende. Endekloen paa 3die og 4de Par usædvanlig
tyk, dolkforinig, næsten lige. Sidste Fodpar med
Hofteleddet bredt, pladeformigt og i det nedre bagre Hjørne
uddraget til en skarp bagudrettet Fortsats. Halevedhænget
dobbelt saa langt som bredt og næsten lige til Roden spaltet.
Farven hvidagtig. Længden 8""".
Findesteder. Ståt. 240. 303. 312.
Bemærkninger. Paa Grund af en vis habituel
Lighed var jeg i Begyndelsen tilbøielig til at henføre denne
Art til Boeck’s Slægt Hippomedon, men finder det nu
rigtigere at rangere den under Slægten Anonyx i den
Be-grændsning, hvori denne Slægt af Boeck tages. Af de
tidligere bekjendte Anonyx-Arter kommer den utvivlsomt
nærmest A. pumüus Lilljeborg. men kjendes let ved de betydelig
stærkere uddragne bagre Sidehjørner paa 3die
Bagkrops-segment samt ved den eiendommelige sporeformige Fortsats
paa sidste Fodpars Hofteled. hvilken sidste Character har
givet Anledning til Artsbenævnelsen. 1 lste Fodpars
ufuldkommen subcheliforine Bygning skiller den sig fra alle øvrige
Arter af Slægten og stemmer i denne Henseende mere
overens med Slægterne Lysianassa og Socarnes.
Beskrivelse af Hunnen. Legemet er (se Pl. XII.
Fig. 3) af mindre undersætsig Fonn og temmelig stærkt
sammentrykt fra Siderne, med temmelig høie Epimerer.
Hovedet er kjendeligt længere end lste
Forkropsseg-ment og viser sig i Midten mellem Roden af lste Par
Følere noget fremspringende. Sidehjørnerne er udtrukne i
en skarp fortilrettet Spids.
De 4 forreste Par Epimerer er temmelig sinale og
dobbelt saa høie som selve Kroppen. Det 4de er bagtil
noget udrandet og nedenfor Udrandningen afstumpet. 5te
Par er noget bredere end hoit og af uregelmæssig afrundet
Form.
3die Bagkropssegment har Sidepladerne bagtil
udtrukne i en usædvanlig stor dolkforinig Fortsats, der er
noget skraat opadrettet og rager op over Rygsiden af det
bagerste Parti, naar dette er indbøiet. De 3 sidste
Bag-kropssegmenter er forholdsvis korte og oventil jevnt
hvælvede uden knudeformige Fremspring.
Egentlige Øine fattes. Men indenfor Hovedets Sider
bemærkedes hos de friskt indfangede Individer et diffust
hvidgult Pigment, der vel er at betragte som et Slags
Øiepig-ment, skjøndt dets Fordeling var temmelig uregelmæssig.
lste Par Folere (Fig. 3 a) er omtrent saa lange som
Hovedet og de 2 forreste Forkropssegmenter tilsammen.
Skaftet er temmelig tykt, dog med lste Led forholdsvis
mere forlænget end hos de øvrige Anonyx-Arter. Svøben
er neppe længere end Skattet og bestaar af 9 Led, hvoraf
det lste som sædvanlig er størst og omtrent ligt de 2 lol-
subcheliform, tapering towards the extremity, and longer
than the preceding. Terminal claw on 3rd and 4th pairs
unusually thick, dagger-shaped, almost straight. Last pair
of legs with basal joint broad, lamelliform, and at the lower,
posterior corner jutting out as a sharp, backward directed
projection. Telson twice as long as broad, and cleft almost
to the base. Colour whitish. Length 8"™.
Locality. — Stats. 240, 303, 312.
Remarks. — Misled by a certain habitual likeness,
I was at first disposed to refer this species to Boeck’s
genus Hippomedon. but now see fit to establish it under
the genus Anonyx, in the restricted sense that genus is
taken by Boeck. Of the previously known Anonyx species,
it unquestionably approximates closest A. pumilus
Lilljeborg, but is easily recognized by the much more produced
posterior lateral corners on the 3rd abdominal segment,
as also the peculiar spur-like projection on the basal
joint ol’ the last pair of legs, a character that suggested
the specific designation. In the imperfect subcheliform
structure of the 1st pair of legs, it differs from all other
known species of the genus, agreeing in this respect rather
with the genera Lysianassa, and Socarnes.
Description of the Female. — The body (see PI.
XII, fig. 3) less thickset in form and a good deal
compressed from the sides, with rather deep epimera.
The head is appreciably longer than the 1st thoracic
segment, somewhat projected in the middle between the
bases of the 1st pair of antennæ. The lateral corners produced
to a sharp, anteriorly directed point.
The 4 anterior pairs of epimera are rather slender,
and twice as high as the body itself. The 4th pair are
somewhat einarginate posteriorly, and, below the
emargina-tion, obtuse. The 5th pair are somewhat broader than
high, and irregularly rounded in form.
The 3rd abdominal segment has the lateral plates
drawn out posteriorly as an unusually large, dagger-shaped
projection, directed somewhat obliquely upward and
extending over the dorsal face of the posterior part, when
the latter is bent in. The 3 last abdominal segments are
comparatively short, and uniformly arched above, without
tuberculifonn projections.
Eyes, in a strict sense, entirely wanting. A little within
the sides of the head, is observed however in recently taken
individuals a diffuse, whitish-yellow pigmentary substance,
that must, one would imagine, be regarded, as a kind of
ocular pigment, though its distribution was by no means
uniform.
The 1st pair of antennæ (fig. 3 a) are about as long
as the head and the 2 anterior thoracic segments taken
together. The peduncle is rather thick, though with
the 1st joint relatively more elongate than in any of the
other Anonyx species. The flagellum is scarcely at all
longer than the peduncle, and consists of 9 articulations,
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