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247
Rostrum er (se Fig. 6) mindre tydeligt begrændset
fra Basalstykkerne, saa at jeg først tog feil af dets Form.
Det synes imidlertid at være vel udviklet og kileformigt
eller pyramidalt som hos Sc. Strømii, med Basalranden
temmelig bred, og jevnt afsmalnende mod Spidsen.
Stilken er forholdsvis kort, neppe mere end halvt saa
lang som Capitulum og noget indknebet paa Midten, uden
dog at vise nogen mærkbar Boiniug. Den er som hos Sc.
Strømii dækket af store regelmæssigt taglagte Kalkskjæl,
der alene ved den noget udbredte Basis bliver meget smaa
og rudimentære.
Den ydre Beklædningsmembran er overalt, saavel paa
Capitulum som Stilken, ru af fine Smaapigge. der ligesom
et fint Dun overdrager hele Legemet.
Paa et af de undersøgte Exemplarer fandtes fæstede
til Indsiden af Skjoldene nær deres Aabningsrand 2 af de
eiendommelige supplementære Hanner, hvoraf den ene er
afbildet Fig. 7 stærkt forstørrret. Legemet er blødt, uden
Spor af Valvler eller Kalkplader, hvorimod den tynde
contractile Hud er overalt ru af yderst tine Smaapigge. Af
Form er det temmelig regelmæssigt ovalt og viser i den
ene Ende en af 4 læbeformige Fortykkelser begrændset
Aabning, hvorigjennem et Bundt af stive Borster (de
rudimentære Bander) rager frem. Paa den elie Side at
Legemet og i temmelig betydelig Afstand fra den aborale Ende
sees de 2 Hefteantenner med sine Borster og Hefteskiver.
Legemet er fyldt med et fint kornet Indhold og i den ydre
Hud sees tydelige fra Hefteorganerne radierende fine
Muskelfibre.
Farven er som hos de 2 foregaaende Arter ensformig
hvid.
Længden af det største erholdte Exemplar er 35""",
og nærværende Fonn horer saaledes til de største bekjendte
Arter af Slægten.
Forekomst. Vi har taget denne smukke Art paa 3
forskjellige Stationer, alle tilhørende den kolde Areas Dyb.
Af disse ligger de 2 (Ståt. 18 og 35) i Havet mellem Norge
og Færøerne, den 3die (Ståt. 312) NV af Beeren Eiland;
Dybden fra 412 til 1081 Favne. Exemplarerne fandtes
fastheftede dels til Spongier, dels til Smaästene fra
Havbunden.
The rostrum (see fig. 6) is less distinctly marked off
from the basal segments, a character that at first led me
to misapprehend its form. Meanwhile, it would appear to
be well developed, and cuneiform or pyramidal, as in Sc.
Strømii, with the basal margin rather broad and gradually
tapering toward the extremity.
The peduncle is comparatively short, scarcely more
than half as long as the capitulum, and a trifle constricted
in the middle, without however exhibiting any appreciable
flexure. As in Sc. Strømii, it is covered with large
calcareous imbricate scales, and which, at the somewhat
expanded base only, become exceedingly small and
rudimentary.
The outer investing membrane is everywhere, both
on the capitulum and the peduncle, rough to the feel from
minute spikelets, which, with the aspect of a delicate
pubescence, extend over the whole body.
On one of the specimens examined, were found,
attached to the inner side of the scuta, near their occluding
margin, 2 of the peculiar supplementary males, one of which
has been represented in fig. 7, highly magnified. The body
is soft, without a trace of valves or calcareous plates, whereas
the tenuous, contractile skin occurs everywhere roughened,
from exceedingly minute spikelets. In form, it is
approximately oval, and exhibits at one extremity an orifice,
defined by 4 labiate inspissations, through which a fascicle
of stiff bristles (the rudimentary tendrils) are seen to
project. On one side of the body, and placed at a
considerable distance from the aboral end, occur the 2 antennæ
of attachment, with their bristles and discs. The body
contains a finely granular substance; and in the outer
integument may be distinctly seen delicate muscular fibres,
radiating from the organs of attachment.
Colour, as in the 2 preceding species, a uniform
white.
Length of the largest specimen obtained 35""", and
hence the present form ranks among the largest known
species of the genus.
Occurrence. — This beautiful species was taken on
the Norwegian Expedition at 3 different Stations, all
belonging to the cold area. Two (Stats. 18, 35) lay in the
tract of ocean between Norway and the Færoes, the 3rd
(Ståt, 312) north-west of Beeren Eiland; depth ranging
from 412 to 1081 fathoms. The specimens were found in
part attached to sponges, in part to rubble from the sea-bed.
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