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upwards the dermal layer. Oscula or pores not visible in
our specimens. The finest specimen is 40 mm in length; the
greatest diameter is at the top 7 mm, tapering towards the
pedicle, which is only 2 mm in diameter. The other specimen
is a little larger, but broken and not so well preserved as the
first mentioned. The colour is ash-grey.
Habitat. Baffin Bay, Lat. 72° 32’ N., Long. 56° 5’ W., depth
116 fathoms.
Cornuium enferomorphoides n. sp.
Plate 25, fig. 3—6, Plate 29, fig. 22.
Only one specimen represents this new species. The outer
shape resembles very much that of C. textile Carter. The only
difference is the pedicle, which is wanting in this species. The
specimen is attached to a coral. The surface is even and smooth.
I have seen neither oscula nor pores. The length is 40 mm.
The sponge is cylindrical, the diameter about 10 mm. The
thickness of the dermal layer varies from 0,5 to 1 mm. The
inner portions agree tolerably well with those of C. textile
Carter. The consistency is the same as of the two preceding
species of this genus.
The skeleton consists of spined acuate spicules, hastate
(mucronate) or obtuse spicules, and of large, and small
equianchorate spicules.
The spined acuate spicules (Plate 25, fig. 3) are the largest.
and most numerous of the skeleton-spicules. They are always
a little curved and totally spined, tapering from the round
base to the pointed termination. The length is very constant,
0,4 mm, the thickness varies a little.
The hastate (obtuse) spicules (Plate 25, fig. 4). The spicules,
so named by me, are both mucronate, hastate and obtuse, in
this species generally mucronate; but the difference between
these kinds of spicules is often so little, that I call them all
hastate. They are straight, not so numerous as the preceding.
One termination is generally more slender than the other,
both terminations being slightly spined. The length is 0,3—
0.35 mm.
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