KEG A-EXPEDETIONENS VETENSKAPLIGA ARBETEN: 450 
Genus Cladorhiza Wyv. Thoms. 
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 Cladorhigze WyVv. 
lymömistttrocots.. <Ibecdlöwer part 19 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,; 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. 'Fhe spicules of the cortex are curved 
obtuse ones, microspined and arranged in resemblance to the 
spicules of the axis of Axinella O. 5. 
Oscula or pores not visible. 
Skeleton. The skeleton consists of large acuate spi- 
cules, curved obtuse spicules, bihamate and inequianchorate 
spicules. 
The acuute spicules (Plate 25, fig. 26) form the axis of the 
stem and the branches. These spicules are generally straight, 
