163 
which are up to 15 mm high, ca. 
chimneys at about right angles to 
summit, which appears as if it 
knife, the bark-layer is want- 
ing; whether this is due to 
destruction or if it is so in 
the living State of the sponge, 
I dåre not say; perhaps the 
oscula, which nowhere else can 
be seen, are situated here. 
Surface hispid, appears a little 
granulous; between the ‘gran- 
ules’ the very small ostia are 
found. Consistence of the cortex 
like that of skin, very firm 
and tough; the parenchyma 
very soft, crumbling. Colour 
light grayish-brown, with a 
reddish tint. 
Skeleton consists of a typ- 
ically developed bark-layer and 
a Soft parenchyma. The cortex 
is built up of a very dense 
layer of spicula, packed closely 
together and placed at a right 
angle to the surface, the apices 
directed outwards; on the very 
surface between these latter 
spicules are lying bigger ones, 
mostly siender strongyla, but 
as there are several forms 
4 5 mm thick; they rise as 
the surface; cylindrical; at the 
1 been cut transversally with a 
and as they are lying ex- granuiosa, nov. sp. a, b, 
tornoli „ big Styli; c, small styli-tylostyli. 
ternally on the sponge-surface, 
I reckon them as foreign to the sponge. From the interior of the 
parenchyma are running strong spicula-fibres consisting of bigger 
spicules running at right angles towards the surface and raising it 
a little into the above mentioned granules. As for the rest of the 
skeleton it is built up of a great number of spicules, mainly par- 
11 * 
