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Colour. The sponge in driecl state is light grey or light
straw- colour ed.
Habitat. Cape .Jakan, Lat. 68° 32’ N., Long. 177° 41’ E.,
depth 12 fathoms (60 V.).
Ciathria corallorhizoides n. sp.
Plate 25, fig. 73—77, Plate 29, fig. 23.
This species is represented by a very fine specimen. The
shape resembles the root of Corallorhisa innata. The length of
the spec-ies is 80 mm. The surface is slightly hispid. Oscula
and pores numerous, small, dispersed. The sponge is attac-hed
to the branch of a coral. The consistency is not firm.
Skeleton. The skeleton consists of large acuate
spicules, of obtuse spicules, of equianchorate and of bihamate
spicules.
The acuate spicules (Plate 25, fig. 73) are 0,5 mm in length,
totally smooth and slightly curved near the base.
The obtuse spicules (Plate 25, fig. 74). The terminations of
these spicules are often slightly inflated; they are straight or
curved. Their length is 0,32 mm.
The equianchorate spicules (Plate 25, fig. 75). Their shaft is
very thick, and the teeths well separated from each other.
The length i 0,06 mm.
The bihamate spicules (Plate 25, fig. 76, 77). There are two
kinds of these spicules. The larger ones are either C- or
S-fonned, the straight length between the points being 0,04 mm;
the smaller are most often C-curved, the length being only
0,02 mm.
Colour. The sponge is cream-coloured, when preserved in
spirit.
Habitat. Baffin Bay, Lat. 68° 8’ N., Long. 58° 17’ W., depth
169 fathoms.
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