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Genus Cladorhiza Wyv. T ho ms.
Cladorhiza abyssicola M. Sars.
Cladorhiza abyssicola, M. Sars (manuscr., edited by G. O. Sars), On some
remarkable forms of animal Life from the great
deeps of the Norwegian coast, I, pag. 69, Plate 6,
fig. 16—34.
Several specimens of this sponge were dredged up in
Baffin Bay, simple small branches as well as larger ones,
the latter being well developed. The spicules and the outer
shape of these specimens agree perfectly with the description
and figures, which Sars has given of this species.
Habitat. Baffin Bay, depth 116—215 fathoms.
Cladorhiza Nordenskiöldii n. sp.
Plate 25, fig. 56—59, Plate 31, fig. 25.
A single specimen represents this very fine and interesting
species. The sponge has not, as the other Cladorhizce Wyv.
T h oms., roots. The lower part is expanded and attached
to a hard object. The sponge consists of a stem, 225 mm in
length, the greatest thickness being 5 mm, the smallest 2 mm,
and of branches, which are very minute, not exceeding 0,5 mm,
and placed laterally, the upper part of the sponge being
com-pressed. The stem is hard, compact, light yellowish, composed
of acuate spicules arranged longitudinally and parallel to each
other, forming a spiral cord. The branches are composed of
acuate spicules. The cortex is very characteristic. In dried
state it is snow-white. The spicules of the cortex are curved
obtuse ones, microspined and arranged in resemblance to the
spicules of tlie axis of Axinella O. S.
Oscula or pores not visible.
Skeleton. The skeleton consists of large acuate
spicules, curved obtuse spicules, bihamate and inequianchorate
spicules.
Tlie acuate spicules (Plate 25, fig. 26) form the axis of the
stem and the branches. These spicules are generally straight,
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