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140
sede, men lidet fremspringende. 3die Bagkropssegments
Sideplader bagtil gaaende ud i 2 triangulære ved en
Udrandning skilte Portsatser, dun øverste storst. Øinene smalt
nyreformige, eller næsten lineære, sortbrune. 1ste Par
Følere med kort og tvkt Skaft. Bisvøben forlænget, bestaaende
af 9 Led. De 3 bagre Fodpar forholdsvis korte og robuste
med bredt, næsten cirkelformigt Hofteled. Sidste Par
Halefødder forholdsvis korte, neppe overragende det foregaaende
Par. Halevedhænget kløvet til Midten. Længden indtil
36"".
Findested. Station 366.
Bemærkninger. Denne Form staar vistnok meget
nær KrByers Anonyx Vahlii, hvortil Goes henfører den,
men er dog utvivlsomt artsforskjellig. Foruden ved sin
langt betydeligere Størrelse og mere undersætsige
Kropsform, kjendes den meget let i alle Aldre ved den
eiendommelige Fonn af 3die Bagkropssegments Sideplader, der ikke
som bos hin Art danner bagtil en jevnt tilrundet
Udbugt-ning, men gaar ud i ’2 spidse Takker, hvorfra ogsaa den
at’ Sp. Bate foreslaaede Artsbenævnelse er hentet.
Beskrivelse af Hunnen. Legemet er (se Pl. XII,
Fig. 1) i Sammenligning med den anden Art af temmelig
plump Fonn, med jevnt hvælvet Rvgflade og ualmindelig
hoie’ Epimerer.
Hovedet er forholdsvis lidet, betydelig kortere end
1 ste Forkropssegment og har Sidevinklerne tilspidsede, skjøndt
ikke meget fremspringende. En stor Del af dets Sider
tilligemed samtlige Munddele dækkes fuldstændigt af lste Par
Epimerer.
Af Forkropssegmenterne er det lste noget længere
end de nærmest følgende; de 2 sidste er atter noget kortere
end det foregaaende. De 4 forreste Par Epimerer er over
dobbelt saa boie som selve Kroppen og synes forholdsvis
smale, idet de gjensidigt for en stor Del dækker hinanden.
Dot sidste af dem er som sædvanlig bagtil stærkt udrandet,
for at kunne optage det følgende Par, og er nedenfor
Ud-randningen uddraget i et skarpt Hjørne. 5te Par Epimerer
er af uregelmæssig firkantet Fonn og noget høiere end
bredt; de 2 følgende betydelig mindre.
De 3 forreste Bagkropssegmenter har Sidepladerne
brede og dybe. Paa 3die Segment danner de bagtil 2
skarpe Hjørner, hvoraf det nedre forestiller det egentlige
Sidehjørne, medens det ovre betydelig stærkere
fremspringende danner en særegen triangulær Fortsats. Imellem
Ilegge er der en jevn Udrandning. De følgende
Bagkrops-segmenter er oventil jevnt hvælvede, uden Fortsatser eller
Knuder.
however but slightly. Lateral plates of 3rd abdominal
segment jutting out posteriorly in the form of 2
triangular projections, separated by a distinct emargination, the
upper one the larger. Eyes narrow, reniform, or
well-nigh linear, dark-brown in colour. First pair of
antennæ with short and thick peduncle; secondary
flagellum elongate, consisting of 9 articulations. The 3
posterior pairs of legs short and robust, with basal joint
broad, almost circular. Last pair of caudal stylets
comparatively short, projecting but very little, if at all, over
the preceding pair. Telson cleft to the middle. Length
reaching 36"".
i
Locality. — Ståt. 366.
Remarks. — This form does indeed approximate very
closely Kröyer’s Anonyx Tahiti, to which Goes has referred
it. but is nevertheless without a doubt specifically distinct.
Let alone its far greater size and more thickset body, the
species may be easily recognized, in all stages of
development. by the peculiar form distinguishing the lateral plates
of the 3rd abdominal segment, which do not, as in the
forementioned species, exhibit behind an evenly rounded curve,
but jut forth as 2 acute teeth, a character indeed from which
the specific appellation suggested by Sp. Bate is taken.
Description of the Female. — The body (see Fl.
XII. fig. 1), as compared with that in the other species,
rather clumsy in form, with a equably arched dorsal
surface and remarkably deep epimera.
The head comparatively small, much shorter than the
lst thoracic segment, and with the lateral angles pointed,
though not to any great extent projecting. A very
considerable portion of the sides, as also the oral appendages,
are entirely covered by the lst pair of epimera.
Of the thoracic segments, the 1st is somewhat longer
than those immediately succeeding it; tin- last 2 being
also a trifle shorter than the preceding. Tile 4 anterior
pairs of epimera are upwards of double the height
attained by the body itself, and apparently slender, covering
one another, as they do, to a great extent. The last of
these pairs are as usual very considerably einarginate
posteriorly, to serve for the reception of the succeeding pair,
appearing produced below, as an acute angle. The 5th
pair of epimera have an irregular, quadrate form, their
height slightly exceeding their breadth; the 2 succeeding
pairs are considerably smaller.
The 3 anterior abdominal segments have the lateral
plates broad and deep. < )n the 3rd segment, they
constitute posteriorly 2 sharp corners, of which the lower
represents the true lateral corner, whereas the upper, jutting
forth much more prominently, constitutes a characteristic
triangular projection. Between the two occurs a uniform
emargination. The succeeding abdominal segments are
equably arched above, without either projection or
protuberance.
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