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103
nogen Tilnærmelse til det for A. baffini cliaraeteristiske
piggede Udseende var at bemærke bos nogen af dé her
indsamlede Exemplarer. Miers opfarer den vistnok
desuagtet kun som en Varietet af A. baffini; men det synes
mig dog, at det Faktum, at den selvsamme Form
forekommer paa en vidt adskilt Loealitet i Nordhavet, i
Forbindelse med de ovenanførte Data, taler stærkt til Fordel for
dens virkelige speciiiske Forskjel fra A. baffini, hvorfor jeg
ogsaa tror her at burde opføre den som en distinct Art
i tinder det af mig først foreslaaede Navn.
Beskrivelse af Hunnen. Legemets Form er (se PI.
IX. Fig. 22) omtrent som hos foregaaende Art, dog
forholdsvis endnu noget mere undersætsig. Dets Overflade
er noget ru, men ikke som hos A. baffini loddent, og de
for hin Art cliaraeteristiske dorsale Fortsatser mangler her
ganske eller er kun repræsenterede ved lidet fremspringende
rundagtige Knuder.
Hovedet viser oventil istedetfor de 2 høie koniske
Fortsatser, der udmærker foregaaende Art. kun en stump,
i Midten noget fordybet Forhøjning.
1ste frie Forkropssegment er oventil fuldkommen glat,
hvorimod de 6 følgende har i Midten af Rygfladen en stump,
tvedelt Forhøining. Epimererne paa de 3 sidste Segmenter
er som hos foregaaende Art stærkt udstaaende til Siderne,
men mindre skarpt tilspidsede.
Bagkroppens 2 foreste frie Segmenter er fuldstændig
glatte, uden Spor af nogen dorsale Fortsatser, og heller
ikke paa Endesegmentets Rygflade bemærkes nogen
saadanne, hvorimod der ved Basis af samme findes til hver
Side en Stump triangulær Sidefortsats.
Øinene er af et lignende Udseende som hos A. baffini,
store og fremstaaende, triangulært nyredannede og forsynede
med mørkt Pigment.
Hvad Kroppens forskjellige Lemmer angaar, saa har
jeg ikke kunnet undersøge disse saa nøiagtigt, som jeg
kunde have ønsket, da det eneste foreliggende Exemplar
maatte skaanes. Men de synes i alt væsentligt at ligne
samme af A. baffini.
Det foreliggende Exemplar var en fuldt udviklet Hun
og havde sine 2det Par Følere tæt besatte med den nylig
af Brystposen udkrøbne Yngel.
Farven var meget bleg kjodfarvet, faldende mest i
det gule.
Længden af det erholdte Exemplar var, uden at regne
Følerne, 35m™.
Forekomst og Udbredning. IJet beskrevne Exemplar
optoges under Expeditionens 1ste Togt i Havet udenfor vor
Vestkyst fra et Dyb af 412 Favne, indviklet i en de til
Bundskraben fæstede Svabberter. Stationen tilhorer den
kolde Area og ligger paa Aflieldet fra Havbankerne mod
det udenfor liggende store Havdyb.
Som ovenanført blev den samme Fonn under den
Engelske Nordpol-Expedition med -’Alert" og "Discovery"
even in great abundance thoughout one locality, none of the
specimens there taken having however exhibited the slightest
approximation to the peculiar spiky appearance characteristic
of A. baffini. Miers regards it indeed notwithstanding as a
variety of A. baffini; but, in my judgment, the fact of the
self same form occurring in a widely different locality in the
Northern ()cean, together with the above-stated data, militates
strongly in favour of its true specific distinctness from A.
baffini; and hence I have seen fit to establish it as a
separate species under the name I first suggested.
Description of the Female. — The form of the body
(see Pl. IX. fig. 22) is about the same as that in the preceding
species, though comparatively still more thickset. Its
surface is somewhat rough, but not, as in A. baffini, clothed
with hair; and the dorsal projections characteristic of that
species are entirely wanting, or represented merely by small
and but slightly protruding roundish knobs.
The head exhibits above, in place of tile 2 elevated
conical projections that distinguish the preceding species,
simply an obtuse prominence, somewhat depressed in the
middle.
The 1st free segment is perfectly smooth above, whereas
the K succeeding segments have in the middle of the dorsal
surface an obtuse, bifurcate prominence. The epimera on
the last 3 segments project, as in the preceding species,
very considerably toward the sides, but are less acutely
pointed.
The 2 anterior free segments of the abdomen are
perfectly smooth, without a tracé of dorsal projections, nor
can any such be observed on the dorsal surface of the
terminal segment, whereas at the base is seen on either
side an obtuse, triangular lateral projection.
The eyes, of the same appearence as in A. baffini,
large and protuding, triangular-reniform, and furnished with
a dark pigment.
As regards the various appendages of the body. I
have lacked opportunity to examine them with the accuracy
1 could have wished, the only specimen before me having
bad to be very carefully handled. In all essential
characteristics. however, they apparently resemble those in A. baffini.
The specimen secured was a fully developed female,
and had the 2nd pair of antennæ thickly covered with
young^that apparently had just left the marsupium.
The colour was an exceedingly light pink, with a
distinct shade of yellow.
Length of the specimen obtained — excluding the
antennæ — 35™’". .
Occurrence and Distribution. — The specimen
described was brought up. on the 1st cruise of the
Expedition, off the West Coast of Norway, from a depth of 412
fathoms, attached to one of the hempen tangles fastened
to the dredge. The Station lay in the cold area, on the
slope of the banks that shelve down to the great ocean
depths.
As stated above, the same form was found on
the English North Pole Expedition with the "Alert" and
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