134 
dy 
dermal-membrane. Consistence resembles that of soft india rubber; 
choanosome nearly slimy to the touch. Colour fleshy, the mounds 
of the liveliest colours. 
Skeleton consists of long 
spiculo-fibres often connect- 
ed and intercrossed by other 
fibres at acute angles; the 
main fibres are running ob- 
liquely towards the surface; 
their ends are often dissolv¬ 
ed into spiculo-tufts, where- 
upon the dermal-membrane 
is resting; but special spic- 
ule-tufts are also met with 
under the dermal-mem¬ 
brane, independent of the 
main fibres; many isolated 
spicules are lying between 
the fibres, quite disorderly; 
these latter are more fre- 
quently tylota than styli, 
while these latter for the 
main part are building up 
the fibres; rhaphides are 
lying in trichodragmata and 
here and there isolated. 
Spicules: (fig. 15a—d) 
1 . styli; a little curved, 
sometimes evenly over the 
greater part, sometimes 
more abruptly and then most often in the first ^/s; thickness of 
greater part of spicule even, only in the last smaller part, tapering to 
the apex, which is moderately sharp and often very abruptly marked, 
sometimes so as to form strongyla. Length varying about 360 p, 
O 
Fig. 15 
Tedania diversi-rhaphidiophora, nov. sp. 
a, styli ; b, strongyla; c, tylota ; d, longer rhaphi¬ 
des ; e, shorter rhaphides. 
thickness about 9—10 jn. 2. tylota; nearly straight, heads only a 
little marked, shaft cylindrical, perhaps a very little thicker in the 
middle; length about 280 p, thickness about 8 p of the shaft. 3. 
rhaphides; of two sorts; bigger ones, length ca. 190/t ; smaller 
