30 
1°. tr©. ac. f. Of these spieules there are three kinds. One kind 
is very large (fig. 129, pl. IV) another measures only !/, of it in 
length (fig. 132a, b, c). Between these two extremes there are 
spieules about two and a half or three times the length of the 
small ones. A peculiarity of these is that the top (near the head) 
is bent or rather nicked (fig. 130). 
2° (tr?) ac. (f). The spieules with indistinet heads are yet more 
indistincetly fusiform. It is nearly (tr°) ac. They are the longest of 
all and occur especially in the margin of the disk (fig. 130). They 
are so thin and flexuous that they are often bent in the prepara- 
tions, mounted in canada balsam. I have figured one in that posi- 
tion. First I thought it was a distinet kind of spieules, but fur- 
ther observations showed me that they are only accidentally cur- 
ved. It often happens that Sponges of this kind are dredged up, 
which dont show the protruding marginal spicules. But it seems to 
me that this has been caused the spicules having broken off. For 
that reason I can’t entitle these Sponges with a new specific name. 
The arrangement of the spieules.... more or less radiating.... 
the parallel bundles in the tubes, the small stout pin-shaped need- 
les in the rind, this forms the character of the genus. It may be 
that further investigations show that I am wrong in identifying the 
Sponge with Bowerbank’s species. But as the original specimen 
from the British Museum is not yet observed and compared with 
original specimens of Balsamo Crivelli, de Merejskowsky etc. no per- 
son shall to make out the question absolutely. It is a pitty that 
for some time the confusion and synonymy must reign. 
As I have stated, I have for description also the Sponges from 
the third and fourth „Barents-Expedition”. I am forced to publish 
my results hereupon in another paper. I then hope to speak about 
some histological details of this curious Sponge. 
12. Thecophora semisuberites OÖ. S. [Pl. IV, fig. 133— 136]. 
Diagn. Corpus basi latissimo haerens ; subconiforme capitatum. Spi- 
cula indicantia: tr°. ac. f. [magnitudine variante]. — 
Loc. Lat. 72° 32,3 N.; long. 36° 39'.5 E. (Barentsea). 
