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(ter er temmelig ligeligt udviklede saavel paa deu ovre Flade
som langs Sidekanterne. De 2 bagre Segmenter mangler
derimod ganske Pigge og de dem beklædende Integumenter
synes ogsaa at være tyndere og mere budagtige. Næstsidste
Segment bar oventil i Midten en tydeligt markeret
Længde-fure, fra hvilken en anden kortere strækker sig paatværs
til hver Side. hvorved fremkommer ligesom et korsformigt
Indtryk i Midten. Sidste Segment er bagtil dybt udrandet
og har Sidehjørnerne stumpt afrundede.
Bagkroppen er oventil jevnt hvælvet og glat, uden
Spor af Pigge. Derimod er Epimererne som hos
foregaaende Art tilspidsede og udstaaende til Siderne samt ved
Spidsen forsynede med korte Borster.
Øinene er, i Modsætning til hvad Tilfældet er hos
foregaaende Art, tydeligt udviklede, skjøndt temmelig smaa,
og har sin Plads paa Siderne af Hovedet, umiddelbart bag
Supraorbitalfortsatserne. Deres Pigment er mørkt,
sortagtigt.
Folerne er i sin Bygning ikke væsentlig forskjellig fra
samme bos foregaaende Art.
Kindbakkerne er derimod forholdsvis noget storre og
har Enden mere uddraget og skarpt tilspidset. 1 den ydre
Kant tindes omtrent i Midten et tydeligt, skjøndt lidet
tandformigt Fremspring.
l)e 2 øvrige Par Munddele skiller sig ikke i nogen
væsentlig Grad fra samme hos A. stygius.
Fødderne viser ogsaa en meget lignende Fonn, skjøndt
de er mindre rigeligt børstebesatte og har de knudeformige
Tænder mindre udviklede.
Bagkroppens Buglemmer mangler ogsaa her ethvert
Spor af Borster og har Grenene af et lignende Udseende
som hos foregaaende Art.
Den midterste Haleplade (Fig. 24) er forholdsvis kortere
og bredere øg af temmelig regelmæssig triangulær Form,
med Enden udtrukket i en skarp Spids, hvorfra 2 temmelig
lange divergerende Børster udgaar; 2 lignende Borster er
fæstede til den øvre Flade noget bag Midten.
De ydre Halevedhæng viser intet udmærkende i sin
Bygning. Endepladerne mangler Tænder i Kanterne,
hvorimod Randbørsterne er forholdsvis stærkere udviklede end
hos foregaaende Art.
Farven er skidden graa, med et svagt brunligt Skjær,
og de 2 bagre Forkropssegmenter paa Grund af de
gjen-nemskinnende Indvolde noget mørkere end det øvrige Legeme.
Længden er kun omtrent öll-,mm, altsaa neppe mere
end halvt saa stort som hos foregaaende Art.
Forekomst og Udbredning. 2 Exemplarer af denne
Art toges under Expeditionens lste Togt udenfor Storeggen
(Ståt. 31) fra et Dyb af 417 Favne. Under 2det Togt
gjenfandtes samme Art paa en vidt adskilt Lokalitet, nemlig
SV af .Ian Mayen (Ståt. 237), hvor ligeledes 2 Exemplarer
and the head, has a rough appearance, from numerous minute
spikes, comparatively equal in development alike on the
upper surface and along the lateral margins. On the 2
posterior segments, spikes are entirely wanting, and the
integuments would, too. appear to be thinner and more
cutaneous. The penultimate segment has. above, in the
middle, a distinctly marked longitudinal sulcus, from which
a shorter one extends transversely on either side, producing,
as it were, a cruciform depression in the middle. The last
segment is posteriorly deeply emarginate, and has the lateral
corners obtusely rounded.
The posterior division of the body is uniformly arched
above, and smooth, without a trace of spikes. The epimera,
however, are, as in the preceding species, pointed, and
project toward the sides, being also furnished at the point
with short bristles.
The eyes, contrary to what is the case in the
preceding species, are distinctly developed, though rather small,
and have their position at the sides of the head, immediately
posterior to the supraorbital projections. Their pigment
is of a dark, blackish colour.
The antennæ do not differ essentially in structure
from those of the preceding species.
The mandibles, on the other hand, are relatively
somewhat larger, and have the extremity produced, as also
acutely pointed. On the outer margin, occurs, about in
the middle, a distinct, though small, dentiform projection.
The 2 remaining pairs of oral appendages do not
differ essentially from those in A. stygius.
The legs, too, present a very close resemblance ill
form, though less abundantly furnished with bristles;
moreover, the tuberculiform teeth are not so fully developed.
On the pleopoda, is wanting likewise every trace of
bristles, and the branches have a similar appearance to
those in the preceding species.
The median caudal plate (fig. 24) is relatively shorter
and broader, and comparatively of a regular triangular form,
with the extremity produced to a sharp point, from which
proceed 2 rather long, diverging bristles; 2 similar bristles
are attached to the upper surface, a little posterior to the
middle.
The outer caudal appendages exhibit nothing
distinctive in their structure. The terminal plates have no teeth
on the edges, whereas the marginal bristles are relatively
more developed than in the preceding species.
Colour a dirty grey, with a faint brownish tinge, the
2 posterior segments of the anterior division having, from
the viscera that shine through the integuments, a somewhat
darker shade than the rest of the body.
Length only about o1/-/™: hence, scarcely half that
of the preceding species.
Occurrence and Distribution. — Of this species, 2
specimens were taken on the 1st cruise of the Expedition,
off the Storeggen Bank (Ståt. 31). at a depth of 417
fathoms. On the 2nd cruise, the same species was again
met with, in a widely different locality, viz. — south-west
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